"There was no increase in wound infections when masks were discarded in 1980; in fact there was a significant decrease."
I wouldn't call 0.05 percent “significant” but still, it proves there's no point wearing one. Unless you're in a hazmat suit, don't bother.
annrcse01509-0009.pdf (nih.gov) and Neil Orr showed us in 1981 that a mask, surgical mask etc., wearing one, actually causes infection to the surgical field; no doubt, issues around type, shape, whether facial movements etc. (substack.com)