Earlier quoted context omitted.
Wearing an N95 mask and washing your hands properly will prevent the overwhelming majority of transmission. Could someone still sneeze in your eye? Sure. Could you wear your mask improperly because you haven't been fit tested, yeah. But you sure can reduce your risk a lot.
> Could you wear your mask improperly because you haven't been fit tested, yeah. It is next to impossible to wear an N95 mask correctly.
Do I think that every 0.3 micron or above particle is getting filtered out by the mask for the duration that I wear one? Not really, but I do believe confidently that it is getting the vast majority. Certainly enough to measurably reduce risk.