Smell training is one of the few options for recovering a lost sense of smell – but can we make it more effective?
Researchers are piecing together clues to better understand the puzzling array of symptoms in those who never seem to fully recover from COVID-19.
An expert in olfaction explains the effects of long-term smell loss, the subtle role the sense plays in our lives and resources for those affected.
Around 6 million people have had their sense of smell affected by COVID.