One of the symptoms of the Covid-19 is the loss of smell and taste. 50-75% of the people who got covid caught those symptoms. Some people only lose taste, but others can lose both. Some people can at least taste salt.

Harvard Medical School has found that the olfactory cell types in the upper nasal cavity are most vulnerable to infection by SARS-CoV-2, the virus that causes Covid-19. ACE² is the receptor for the SARS-Cov-2 viral entry. People with loss of smell have less chance to have a fever, cough, and respiratory difficulty than other people with covid-19.

Typically people recover their sense of smell after a few weeks. UK researchers have found a treatment for nasal drops vitamin A. The volunteers have to sniff powerful odours, but only some of them had the drops. The brain scan will detect if there are “smell nerves “.

Dr. Sindwani said people could try to train themselves with the “odour prism”.
“It uses primary odours to retrain the nose, relying on memories and experiences, to train those nerves to come back to life,” said Dr. Sindwani.
Primary odours like flowery, fruity, aromatic, and resinous. They have to take the smell in an oil or a scent stick, smell it for 15-20 seconds, and try to remember the smell. They have to do it with the four smells. People have to do that 3-4 times a day, after some months it should begin to reappear.

15% of people took more than 60 days to recover. 5% of people take more than 6 months to recover.

People become vulnerable to food poisoning and fire. They even smell things that are not there.
Moien said: “Most people don’t acknowledge the importance of smell in their lives until they lose it.”

Some people can’t even eat, the taste is even very important in our lives.