COVID-19, the respiratory disease caused by the new coronavirus, can have a variety of symptoms. Often, the types of symptoms and their severity can vary from person to person.
In addition to respiratory symptoms like a cough and shortness of breath, COVID-19 can also have other types of symptoms. One of these is losing your sense of smell or taste.
Let’s take a closer look at the loss of smell and taste with COVID-19, how common it is, and how long these symptoms may last.
It’s not uncommon for upper respiratory infections such as the common cold or flu to affect our senses of smell and taste. In fact, it’s estimated that a temporary loss of smell happens in
Your sense of taste and sense of smell are closely linked. In fact, experiencing a loss of smell can greatly impact your sense of taste. It’s estimated that 95 percent of the time when there’s a loss of taste, it’s associated with a reduced sense of smell.
Loss of smell can occur suddenly in people with COVID-19 and is often accompanied by loss of taste. Also, with COVID-19, these symptoms may occur without a runny or stuffy nose.
It’s possible that a loss of smell or taste could be an early symptom of COVID-19. A
In particular, a loss of smell may also be a potential indicator of a mild case of COVID-19. A
It’s still unclear exactly how a loss of smell and taste happens with COVID-19, but there are some theories.
SARS-CoV-2, the coronavirus that causes COVID-19, binds to a protein called ACE2 that’s found on the surface of potential host cells. ACE2 is abundant on cells found in your nose and mouth.
It’s possible that the virus could directly invade the nerve cells associated with your senses of smell and taste. However, a recent study in the journal Science Advances has cast doubt on this idea.
Researchers failed to find ACE2 on nerve cells that detect scents. Instead, they found ACE2 on cells that surround and support these nerve cells. It’s possible that infection of these surrounding cells could lead to levels of inflammation or damage that impact your ability to smell.
Less research has been done on how COVID-19 specifically affects taste. Since loss of smell and loss of taste often occur together, it’s currently
The reported prevalence of a loss of smell and taste with COVID-19 varies greatly across studies.
A recent study published in Mayo Clinic Proceedings took a deep dive into how common a loss of smell or taste is in COVID-19. Researchers reviewed results from 24 studies, which represented data from over 8,000 people with a confirmed case of COVID-19. They found the following:
Are you concerned that you may be losing your sense of smell or taste? If so, you can use common household items to test these senses.
If you find that you have trouble picking up on the scents or tastes of your selected items, you may be experiencing a loss of smell or taste.
If these symptoms developed suddenly, they could be an early indicator of COVID-19. If you’re concerned that you may have contracted the new coronavirus, you can seek out a testing site near you to confirm whether you have COVID-19.
Loss of smell or taste due to COVID-19 appears to last slightly longer compared to other upper respiratory infections. For example, loss of these senses due to a cold typically lasts for
A report by the Centers for Disease Control and Prevention (CDC) assessed the duration of symptoms in 274 adults that had mild COVID-19 symptoms. The median reported duration of loss of smell or taste was
This is supported by a
In addition to a loss of smell or taste, there are several other symptoms to watch out for with COVID-19. Some of the most common symptoms include:
If you believe that you may have COVID-19, stay home and try to isolate yourself from others in your household.
Contact your doctor to discuss your symptoms. Your doctor can also advise you on getting tested and how to care for yourself if you test positive for COVID-19.
Most of the time, mild cases of COVID-19 can be treated at home. However, in some cases the illness can become more serious. This is more likely in older adults and in individuals with certain underlying health conditions, such as:
Seek emergency medical care immediately if you experience:
In addition to COVID-19, there are many other factors that can cause you to lose your sense of smell or taste. These can include:
A loss of smell or taste can happen with COVID-19. These symptoms often occur together, although they can they can also occur separately.
With COVID-19, a loss of taste or smell can come on suddenly and occur early, sometimes before other COVID-19 symptoms develop. Unlike other upper respiratory infections, a loss of smell or taste isn’t always associated with a runny or stuffy nose.
Most people who experience loss of smell or taste due to COVID-19 find that these symptoms resolve within a few weeks.
Although COVID-19 is mild most of the time, it can escalate to a serious illness. Seek emergency medical care if you have symptoms such as difficulty breathing, chest pain, or confusion.
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