True that !
It sucks to be them (!), ..and not be close shaven.
Well, any protection beats having no protection.
In Medieval times, they wore masks of rags soaked in Vinegar to ward off the Black Plague.
You do what you can; but, bottom line, you are quite right about a tight facial fit.
A regular surgical mask will stop mot exposure unless you are really up close and personal.
Washing your hands helps a tremendous amount too. Forget about “antibacterial soap” it does not work on a virus. Just wash thoroughly. I saw a health worker once tell children to sing “Happy Birthday” while they wash their hands because it takes that long to thoroughly wash the hands.