The British Ear Nose Throat (ENT) Association advises anyone with a loss of smell or taste to self-isolate. In a recent letter released by ENT UK, it informed the public the link between COVID-19 and a loss of taste or smell. There are also reports in China, South Korea and Italy surfacing. Below is the link to the letter from the ENT UK.
https://www.entuk.org/sites/default/files/files/Loss%20of%20sense%20of%20smell%20as%20marker%20of%20COVID.pdf