Evidence suggests that odor-sensing cells are the key entry point for SARS COV-2, according to a new study. Researchers experimented with a small number of human cell samples. They report that the “hook” of cells SARS-CoV-2 uses to latch onto and infect cells is up to 700 times more prevalent in the olfactory supporting cells lining the inside of the upper part of the nose than in the lining cells of the rest of the nose and windpipe that leads to the lungs. These supporting cells are necessary for the function/development of odor-sensing cells. The findings, from a preliminary study of cells lining both the nose and trachea, could advance the search for the best target for topical or local antiviral drugs to treat COVID-19, and offers further clues into why people with the virus sometimes lose their sense of smell. “Loss of the sense of smell is associated with COVID-19, generally in the …