Covid-19: why are some people losing their taste and smell?

As the coronavirus pandemic swept around the globe, anecdotal reports began to emerge about a strange symptom: people were losing their sense of taste and smell. To find out whether this effect is really down to Sars-CoV-2, and if so, why, Ian Sample talks to Carl Philpott. Help support our independent journalism at theguardian.com/sciencepod