Say it don’t spray it. If droplets Of spit entered the nose mouth area I would assume the mask might help prevent that. But the truth is I have not seen the definitive study done on this for Covid. Has anyone?
With CoupFlu aerosols are the issue, not droplets.
Using the kind of disposable mask that says “NOT FOR USE IN HEALTHCARE SETTINGS” on the back of the box is like using chicken wire to keep out mosquitos.
I even had a doc admit as much. The masks may be good cues to remind folks to social distance, but that’s it.