For Covid transmission?
Mostly no. Like 90% mostly no.
my wife is a nurse. They of course, wear PPE of every kind constantly. In a 6 person general practice office, her and two others came down with 19 all in a 24 hour period. Both of us are at home with it now, basically a fever and light cough. Mine was 5 days after hers, last Sat night, and I’m pretty much over it.