Take it for what it’s worth, because it’s from a long post, on another forum, from someone who was a CEO of an anti-microbial manufacturer. (Yes, I did run him down, and he probably was, but will only paraphrase what he said.)
There’s ample evidence as to transmission mode, in regards to coronaviruses, since they cause a significant number of colds. Infection is predominately hand to face (eye’s, nose, mouth), though if you’re in too close a proximity a sneeze will do it. (Or, even inhaling someone’s breath, I suppose.) Someone infected touches something that you later touch and move to your face, etc.
Not aerosol, because it won’t survive drying, which brings up the question of: how dry is dry enough?
Masks, at least ones that were wetted, weren’t an effective barrier to something that needed moisture to survive. That breathing through a moist, infected one, wasn’t particularly wise.
Alcohol as a hand sanitizer is fairly effective because the virus has an envelope that alcohol denatures.
Wash your hands, don’t touch your face.
Rud Istvan, and he was speaking generally, not as an expert on this. As I said, take it for what it’s worth.
edited to add: general information post… the quote it begins with just seemed like a good place to start it.