Parosmia refers to this phenomenon, as people report unpleasant odours months after contracting Covid-19.
The “long-Covid” effects may produce smells like sulphur, fish, burnt toast or sickly sweet.
Nirmal Kumar, an ear, nose and throat (ENT) surgeon and professor at Edge Hill University Medical School, was among the first people to identify anosmia – the loss of sense of smell.
Professor Kumar urged Public Health England (PHE) to add it to their symptoms list long before they did so.