Of course, I'd wear a mask. By the way, that is not a sound argument. Your premises are incorrect.
Premise 1: 1 foot away, mouth wide open...
--I would not let anyone do such a thing, the idea that I can only wear a mask, or let my mouth get spit IN, is stupid. This ordeal is not black or white.
Premise 2: Just spit as best as I can and try to...
--This premise is similar to premise 1. It suggests that if you are not wearing a mask, people will either do this against your will or ask you to do it.
Most diseases are carried that way, I would never let someone do that with or without a mask.
In fact, this example proves my point further. This disease is hundreds of millions of times smaller than a plegm cell. May billions. There are very few cases of people getting plegm in their mouths from other people is probably lower than the school covid infection rate (o.2 of a percent).