It's not a stupid question! It can be referred to as airborne because when someone v*s, particles can be released into the air and therefore be breathed-in/swallowed by people who are very nearby. But it is not in the breath of someone with an sv* or a cough or sneeze. You cannot catch it just by being in the same room as an ill person. Before the person v*s, they may be shedding viral particles in their stool when they go to the toilet. But as long as they wash their hands after using the toilet, like everyone should do, that isn't a problem. I hope this puts your mind at rest a bit xxx