A loss of smell (anosmia) is a common COVID-19 symptom, and researchers are just starting to understand why COVID-19 causes a loss of smell and when and how this sensation returns. The data support theories that loss of smell results from an immune response, inflammation, and a disruption of nerve signals. As many as 86% of people with mild or moderate COVID-19 experience this symptom.
This article reviews some of the factors behind a loss of smell and what steps you can take to restore your sense of smell after recovering from COVID-19.
fotostorm / Getty Images
There are still a lot of unanswered questions about COVID-19. As new variants of the coronavirus emerge and researchers collect more data about the infection, the virus's short- and long-term effects become more apparent. While the topic is still under review, the following recommendations have emerged as ways to help people regain their sense of smell following a COVID-19 infection.
Time is a great healer for many ailments, and COVID-19 is no exception. In many cases of COVID-19, where smell or taste is affected, senses return to normal within weeks to months. A 2022 report found that 88% of people who lost their sense of smell during a COVID-19 infection regained it within two years.
Olfactory training is one way to treat anosmia. With this therapy, you use daily exposure to common odors to help retrain your sense of smell.
The key with this treatment is to breathe in certain scents twice daily for 10 to 20 seconds at a time, focusing only on the scent in front of you. You can use multiple scents, but pause for a few clear breaths between each.
According to experts at the American Academy of OtolaryngologyHead and Neck Surgery, you may have to try this treatment for as long as three months before noticing improvement.
Some of the best scents to use to retrain your sense of smell include:
You can use the natural object for your scent testing, but many people prefer to use essential oils.
You can also use various strong-smelling items or scents tied to pleasant memories. One expert suggests that because smell is so closely linked to memory, scents like peanut butter or peppermint candies, which often are prominent in childhood, are especially useful in helping to regain some strength of smell.
When inflammation and other conditions damage the neurons that power your sense of smell, it takes time for them to recover and return to their pre-illness state. Neurons regenerate very slowly, but researchers are studying additional therapiesperhaps even stem cell therapiesthat could help expedite the process.
Some medications that reduce inflammation in your nasal passages may help restore some of your sense of smell. One study showed that glucocorticoids (steroid medications) like Nasacort Allergy 24HR (triamcinolone) and Flonase (fluticasone) nasal spray help significantly improve the sense of smell for people recovering from COVID-19. Some study participants reported a restored sense of smell within a week.
Nasal hygiene is another method that may help you restore your sense of smell. Often recommended as part of the treatment strategy for allergies and other forms of nasal irritation, daily nasal lavageor rinsingwith saline or an added steroid may offer relief.
More research is needed to determine the best way to treat anosmia related to COVID-19. However, if you notice a loss of smell after COVID-19, schedule an appointment with a healthcare provider to ensure no underlying problems contribute to your loss of smell.
Conditions such as nasal polyps or allergic rhinitis can diminish the sense of smell and require additional or separate treatment from your COVID-related issues.
The onset and duration of the loss of smell can vary from one person to another, but research suggests it's an early and short-term symptom for most people. In one report from 2021, loss of smell and taste happened about four to five days after the onset of other symptoms at the start of a COVID-19 infection. The same study revealed that smell and taste usually returned within seven to 14 days.
However, a newer report, from 2023, found that a loss of taste or smell could last nine months or more after a COVID-19 infection.
Your ability to smell may not seem like the most important function of your bodyat least until it's gonebut a sense of smell contributes to quality of life and helps you appreciate the tastes and scents of the world around you.
In some professions, like cooking, a sense of smell is crucial. In otherssuch as firefighters or emergency respondersa sense of smell is needed to detect dangerous situations or conditions.
See a healthcare provider if olfactory training and other simple at-home methods aren't working after several months. They may refer you to an ear, nose, and throat (ENT) specialist (otolaryngologist) for additional treatment.
There is still a lot of ongoing research on COVID-19-related anosmia, but a specialist can guide you toward prescription medications, additional testing, or other therapies that may help.
Loss of smell has been highlighted as one of the most noticeable symptoms of COVID-19and one that takes quite a bit of time for some people to recover from. No single therapy or treatment alone is proven to restore your sense of smell after a COVID-19 infection. Still, you can try various at-home therapies and seek advice from a qualified healthcare provider.
Duke Health. Scientists find key reason why loss of smell occurs in long COVID-19.
Boscolo-Rizzo P,Fabbris C,Polesel J, et al. Two-year prevalence and recovery rate of altered sense of smell or taste in patients with mildly symptomatic COVID-19.JAMA Otolaryngol Head Neck Surg. 2022;148(9):889891. doi:10.1001/jamaoto.2022.1983
Huynh PP,Ishii LE,Ishii M. What Is anosmia?JAMA. 2020;324(2):206. doi:10.1001/jama.2020.10966
ENT Health. Smell retraining therapy.
UC Health. How to regain your sense of taste and smell after COVID-19.
Kurtenbach S, Goss GM, Goncalves S, et al. Cell-based therapy restores olfactory function in an inducible model ofhyposmia.Stem Cell Reports. 2019;12(6):1354-1365. doi:10.1016/j.stemcr.2019.05.001
Singh CV, Jain S, Parveen S. The outcome of fluticasone nasal spray on anosmia and triamcinolone oral paste in dysgeusia in COVID-19 patients. Am J Otolaryngol. 2021;42(3):102892. doi: 10.1016/j.amjoto.2020.102892
BJC Healthcare. After COVID-19: will I get my sense of smell back?
Santos REA, da Silva MG, do Monte Silva MCB, et al. Onset and duration of symptoms of loss of smell/taste in patients with COVID-19: A systematic review.Am J Otolaryngol. April 2021;42(2):102889. doi:10.1016/j.amjoto.2020.102889
Stankevice D, Fjaeldstad AW, Agergaard J, Ovesen T. Long-term COVID-19 smell and taste disorders differ significantly from other post-infectious cases. Laryngoscope. 2023;133(1):169-174. doi:10.1002/lary.30453
National Institutes of Health. Smell disorders.
Thanks for your feedback!
What is your feedback?
Read more:
How to Smell Again After COVID-19: 6 Steps to Take - Verywell Health
- The Health Department website was attacked in the middle of the coronavirus pandemic - Vox.com [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Defining Coronavirus Symptoms: From Mild To Moderate To Severe : Goats and Soda - NPR [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- What Are the Symptoms of a Coronavirus Infection? - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Hotels Were Rolling Out Tools to Help Calm Travelers. Then Coronavirus Hit. - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- The Coronavirus, by the Numbers - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Opinion: Early Coronavirus Testing Failures Will Cost Lives - NPR [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Coronavirus Cases Surge in U.S. and Europe - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Two Emergency Room Doctors Are in Critical Condition With Coronavirus - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Coronavirus: Over 1000 Cases Now In U.S., And 'It's Going To Get Worse,' Fauci Says - NPR [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- China Spins Tale That the U.S. Army Started the Coronavirus Epidemic - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Everything to Know About the Coronavirus in the United States - The Cut [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Coronavirus closed this school. The kids have special needs: 'You can't Netflix them all day.' - USA TODAY [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- How Long Can The Coronavirus Live On Surfaces? : Shots - Health News - NPR [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Coronavirus Cost to Businesses and Workers: It Has All Gone to Hell - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- In the U.S., More Than 300 Coronavirus Cases Are Confirmed - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- How Jair Bolsonaro's Son, Eduardo, Confirmed His Father's Positive Coronavirus Test to Fox News, Then Lied About It - The Intercept [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- De Blasio Resisted on Coronavirus. Then Aides Said Theyd Quit. - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Trump Is Tested for Coronavirus, and Experts Ask: What Took So Long? - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Live Coronavirus Updates and Coverage - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Coronavirus Threatens Americans With Underlying Conditions - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Coronavirus Capitalism and How to Beat It - The Intercept [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- An essential reading guide to understand the coronavirus - Vox.com [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- N.Y.C.s Economy Could be Ravaged by Coronavirus Outbreak - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- 'A ticking time bomb': Scientists worry about coronavirus spread in Africa - Science Magazine [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- How coronavirus is affecting the restaurant business, in one chart - Vox.com [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Coronavirus Map: How To Track Coronavirus Spread Across The Globe - Forbes [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Coronavirus Testing Website Goes Live and Quickly Hits Capacity - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Map: How Many Cases Of Coronavirus Are There In Each US State? : Shots - Health News - NPR [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- Live Coronavirus Updates and Coverage Globally - The New York Times [Last Updated On: March 16th, 2020] [Originally Added On: March 16th, 2020]
- This Is How the Coronavirus Will Destroy the Economy - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Every Star and Public Figure Diagnosed with COVID-19: A Running List - The Daily Beast [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Coronavirus: What you need to know - Fox News [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Travel updates: which countries have coronavirus restrictions and FCO warnings in place? - The Guardian [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Staff angered as Charter prohibits working from home despite spread of coronavirus - TechCrunch [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- If coronavirus scares you, read this to take control over your health anxiety - The Guardian [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- San Francisco and Bay Area will shelter in place to slow coronavirus spread - The Verge [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Coronavirus spreading fastest in UK in London - The Guardian [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Businesses Face a New Coronavirus Threat: Shrinking Access to Credit - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Welcome to Marriage During the Coronavirus - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Sweeping restrictions take effect in coronavirus response as health officials warn US is at a tipping point - CNN [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- How Long Will the Coronavirus Outbreak and Shutdown Last? - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- 201920 coronavirus pandemic - Wikipedia [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Coronavirus - World Health Organization [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- What Is Coronavirus? | HowStuffWorks [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Coronavirus | CISA [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Is there a cure for the new coronavirus? - Livescience.com [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Shelter in Place: Some Residents in Bay Area Ordered to Stay Home - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Tracking the Impact of the Coronavirus on the U.S. - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- 8 Things Parents Should Know About The Coronavirus: Life Kit - NPR [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Spain, on Lockdown, Weighs Liberties Against Containing Coronavirus - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- New Yorks Nightlife Shuttered to Curb Coronavirus - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- How best to fight the economic impact of the coronavirus pandemic - The Guardian [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Heres whos most at risk from the novel coronavirus - The Verge [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Closing Down the Schools Over Coronavirus - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- The U.S. Economy Cant Withstand the Coronavirus by Itself - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- U.S. Lags in Coronavirus Testing After Slow Response to Outbreak - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- U.K. Steps Up Coronavirus Prevention, But Its Hospitals Have Already Been Strained - NPR [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Coronavirus panic is clearing out grocery stores; heres how workers are handling it - Vox.com [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Tracking the Coronavirus: How Crowded Asian Cities Tackled an Epidemic - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Coronavirus Treatment: Hundreds of Scientists Scramble to Find One - The New York Times [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Coronavirus cases have dropped sharply in South Korea. What's the secret to its success? - Science Magazine [Last Updated On: March 17th, 2020] [Originally Added On: March 17th, 2020]
- Facebook was marking legitimate news articles about the coronavirus as spam due to a software bug - The Verge [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- The Single Most Important Lesson From the 1918 Influenza - The New York Times [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- How to Protect Older People From the Coronavirus - The New York Times [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Coronavirus Is Killing Iranians. So Are Trump's Brutal Sanctions. - The Intercept [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Is there a cure for coronavirus? Why Covid-19 is so hard to treat - Vox.com [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Coronavirus: The math behind why we need social distancing, starting right now - Vox.com [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Europeans Erect Borders Against Coronavirus, but the Enemy Is Already Within - The New York Times [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Some of the last people on earth to hear about the coronavirus pandemic are going to be told on live TV - CNN [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Why the US is still struggling to test for the coronavirus - The Verge [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- The Coronavirus Is Here to Stay, So What Happens Next? - The New York Times [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Coronavirus in the U.S. - The New York Times [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Watch the Footprint of Coronavirus Spread Across Countries - The New York Times [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Coronavirus Briefing: What Happened Today - The New York Times [Last Updated On: March 18th, 2020] [Originally Added On: March 18th, 2020]
- Why the Covid-19 coronavirus is worse than the flu, in one chart - Vox.com [Last Updated On: March 21st, 2020] [Originally Added On: March 21st, 2020]
- Fact-Checking 5 Trump Administration Claims On The Coronavirus Pandemic - NPR [Last Updated On: March 21st, 2020] [Originally Added On: March 21st, 2020]
- Trump has scoreboard obsession. It hasnt worked with coronavirus - POLITICO [Last Updated On: March 21st, 2020] [Originally Added On: March 21st, 2020]
- Here's What Is In The 'Families First' Coronavirus Aid Package Trump Approved - NPR [Last Updated On: March 21st, 2020] [Originally Added On: March 21st, 2020]
- Young Adults Come to Grips With Coronavirus Health Risks - The New York Times [Last Updated On: March 21st, 2020] [Originally Added On: March 21st, 2020]
- Which Country Has Flattened the Curve for the Coronavirus? - The New York Times [Last Updated On: March 21st, 2020] [Originally Added On: March 21st, 2020]