The level of CO2 in a space can be used as proxy for the possible risk of exposure to coronavirus. People infected with coronavirus can spread it around a room in tiny airborne droplets called “aerosols” when they breathe out, speak, shout or sing. These aerosols build up indoors, especially when a place is crowded or there is poor ventilation, and the longer you are surrounded by them, the more chance you have of breathing them in. we also breathe out CO2 a byproduct of respiration which builds up in the air unless a space is ventilated. Do you think that the CO2 portable is something to consider in the fight ?