It's believed most people who experience this symptom also experienced a loss of taste and smell while they were sick. It's also unknown how long it lasts. One study suggests the condition can last up to six months, but the average duration is around three months.

Is COVID-19 causing strange smells and tastes?

COVID-19 survivors are now reporting that certain smells seem strange and some foods taste awful. This is known as parosmia, or a temporary disorder that distorts odors and often makes them unpleasant.

Can you regain your sense of smell after losing it due to COVID-19?

A year on, nearly all patients in a French study who lost their sense of smell after a bout of COVID-19 did regain that ability, researchers report.