@hicopd But the POC pulls in the air around you so if you are near someone sick (and even going into a room where a sick person was just recently because virus can remain in the air for a certain amount of time in a room not well ventilated) you risk picking up something. I caught COVID sitting next to someone in an outdoor restaurant who had no symptoms and had not yet tested positive. Days later they told me they had a positive home test (picks it up later) and I went to my doctor for PCR test (gold standard) and I tested positive with almost no symptom just a slight headache