Has COVID Stolen Your Sense of Smell?

One of the most distinctive symptoms of a COVID infection is loss of the sense of smell. A previous study of nearly 30,000 American adults found that about 60 percent of those who had COVID lost their sense of smell during the infection (Laryngoscope, June 2, 2023). In addition, nearly that many also had blunting of their sense of taste. In some instances, this complication lingers much longer than other COVID symptoms. We discuss the original research below, but first we’ll tell you about new data on the after-effects.

The Sense of Smell Might Be Lost for Years:

The study, called RECOVER, included 1393 people who said they had trouble detecting odors (JAMA Network Open, Sept. 25, 2025). In addition, 1563 were included who did not report that problem. Nearly all of the volunteers had suffered a documented COVID-19 infection.

The researchers tested participants’ ability to smell. 80% of those reporting olfactory difficulties had tests confirming the problem. Somewhat surprisingly, 66% of those who did not report trouble smelling also had some abnormalities in their sense of smell. Of those, 8% were severely impaired even though they were unaware of it.

Not being able to smell is bad enough. The investigators also report a link between an impaired sense of smell and cognitive difficulties or brain fog. Scientists suggest that these deficits could have a profound impact on people’s well-being.

Recovering the Sense of Smell and Taste:

According to the earlier research, not quite three-fourths of individuals regained their senses of smell or taste after they recovered from COVID. That left about 27 percent with only a partial recovery or none at all (Laryngoscope, June 2, 2023). As a result, these people often lose their appetites.

People who suffered more severe cases of COVID-19 were more likely to lose their gustatory senses and less likely to recover them. The authors of this research estimate that more than 20 million Americans may be suffering from a diminished sense of smell or taste.

Anosmia–Losing Your Sense of Smell:

When you lose your sense of smell, doctors call it “anosmia.” It may not seem like that big a deal compared to some of the other COVID complications: trouble breathing, low oxygen saturation, exhaustion, shock or stroke. (Read more about long COVID at this link.)

After people recover from COVID, though, they may experience a range of “long hauler” symptoms. You have probably heard about fatigue, shortness of breath, cough, brain fog, headache, rapid heart rate and dizziness upon standing. Less recognized is prolonged anosmia.

A study published years ago in JAMA Otolaryngology-Head & Neck Surgery (Nov. 18, 2021) reported that between 700,000 and 1.6 million Americans are now suffering from chronic olfactory dysfunction (COD) because of a COVID-19 infection. In other words, their sense of smell is impaired.

The researchers suggest that their assessment of the number of people affected may be a gross underestimate:

“…the estimates for the incidence of acute and chronic OD [olfactory dysfunction] are derived from relatively healthier, ambulatory patients. The incidence of OD may be higher among patients who were hospitalized with SARS-CoV-2. These data suggest an emerging public health concern of OD and the urgent need for research that focuses on treating COVID-19 COD.”

What Is It Like to Have Anosmia?

Losing the sense of smell can be challenging. For one thing, food no longer has the same appeal. That’s because smell and taste go together.

Kimbra had COVID and developed anosmia:

“I had a mild case of Covid 6 months ago. Since then, I lost my sense of smell for some things and acquired a sense of smell for others that aren’t there. I told my doc and was diagnosed with sinusitis. I’m about done with antibiotics and other meds, most of which I’ve been prescribed AFTER all of the symptoms have disappeared except olfactory issues.

“I’m breathing fine. I just can’t smell some things that are there and do smell some things that aren’t there. There’s no treatment for those symptoms, and doctors won’t discuss the possibility of it being related to having had Covid 6 months ago.”

Emmet describes how anosmia affected him:

“In 2009 I had a common cold and lost my sense of smell entirely. I could still taste salty, sweet and bitter. Luckily some of my sense of small has returned over time but I often have trouble enjoying food.

“I have great sympathy for anyone who has completely lost their sense of smell. It sucks big time. I’ve experienced some partial loss myself. In my case I’ve tried all kinds of supplements and I don’t think they did much.”

Zandi also caught a nasty virus:

“Many years ago, I lost my sense of smell and taste after a nasty virus. (CoV cousin?) After many tests and a jolt of steroids, it remained the same. I started seeing a chiropractor who concentrated on areas that affect these senses. After a year I began to smell and taste again at about 90% normal. Eating spicy dishes during that time seemed to help, too. Losing these two senses is devastating and depressing.”

Jane describes her loss of sense of smell and taste after using Flonase:

“I had a cold last Christmas. I used Flonase for about 10 days. My sense of smell and taste both disappeared completely, whereas my sense of smell had been very acute.

“I don’t understand why ENTs and the manufacturer will not consider the possibility that Flonase caused these cases of anosmia. Recently, I have the added annoyance of having an “off” taste with many foods as well as an unpleasant smell, particularly from aerosol cans. Why was it listed as a side effect on the prescription but left off the OTC medication?”

Marilyn and Zicam:

“I lost most of my sense of smell from using Zicam. It’s been years and I still have a limited sense of smell. I’m glad we no longer live where we had a gas line coming into the house, as one day the knob on the stove burner wasn’t completely off, but I never smelled a thing. Fortunately, my husband came home.”

Tom and fluticasone:

“I use fluticasone propionate (Flonase) on a nearly regular basis. A few days ago, almost overnight (literally), I lost my sense of smell and taste – about 80 percent loss. As a test, I sniffed a bottle of dried, snipped chives, which I could always smell.

“I could not smell it at all. Food is now less appetizing. I’m without help or cure.”

Carolyn has a diminished quality of life after losing a sense of smell:

“I was prescribed Fluticasone Propionate, generic for Flonase, last December for allergies. In January I noticed a profound loss of smell and taste. I stopped using it. My sense of smell and taste have not returned. My passion is cooking and baking. I am very distressed about this. My physicians seem unaware of this side effect. It has diminished my quality of life greatly.”

The doctors writing in JAMA Otolaryngology-Head & Neck Surgery (Nov. 18, 2021) suggest that losing a sense of smell after catching COVID-19 can be:

“…associated with decreased general quality of life, impaired food intake, inability to detect harmful gas and smoke, enhanced worries about personal hygiene, diminished social well-being, and the initiation of depressive symptoms.”

They consider this long-lasting complication of COVID as a “growing public health concern.” We agree. Share your own thoughts in the comment section below.