Masks protect us but they are not 100% safe! In most cases, the virus is contagious through the eyes, ears and fingers. When we go outside, the virus is everywhere in the air. Studies show that the virus stays in the air and survive on the surface for a very long time (e.g. elevator). A simple idea. Far-Ultraviolet light C destroys the virus very quickly! This is already used in hospital for cleaning the rooms. There are also mobile-phone cleaning stations already on the market. We have to clean the air with Far-UVC light!