COVID-19: Researchers study long-term impact first round of infection had on sense of smell

Researchers in Sweden are trying to learn more about the long-term impact that the first wave of COVID-19 infections had on individuals who lost their sense of smell when they first learned they had the virus.

Scientists at Stockholm’s Karolinska Institute studied 100 people who came down with the virus in 2020 and found that nearly half had a level of distortion in their sense of smell, 18 months after recovering, the Guardian reported.

A woman gets tested at a mobile COVID-19 testing van on 14th Street in Manhattan on Jan. 4, 2022, in New York City.

A woman gets tested at a mobile COVID-19 testing van on 14th Street in Manhattan on Jan. 4, 2022, in New York City.  (Liao Pan/China News Service via Getty Images)

About 4% did not regain their smell at all, and about a third said they lost some ability to distinguish between scents. The report pointed out that most of those who had a distorted sense of smell did not realize the problem until the study was conducted.

“Given the amount of time since [the] initial insult to the olfactory system, it is likely that these olfactory problems are permanent,” the researchers said, according to the paper.

The Associated Press contributed to this report

Edmund DeMarche is a senior news editor for FoxNews.com. Story tips can be sent to Eddie.DeMarche@fox.com and Twitter @EDeMarche.

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