it's thought that the plague went air-borne a few times, and there's been this persistent fear about ebola getting into the wind, which would be a bloodbath. thankfully, the corona virus itself is relatively weak - or at least is for now. but, this is about the worst transmission vector you could imagine.
in the middle ages, you were dealing with soot from burning wood at relatively low concentrations. nowadays, air pollution is everywhere.
in the middle ages, you were dealing with soot from burning wood at relatively low concentrations. nowadays, air pollution is everywhere.