Name:   MartiniMan - Subject:   Who To Believe Date:   6/17/2020 3:26:03 PM

Yep, most of those are near on worthless.  But even the surgical masks allow droplets and aerosols as they are not fitted to the face but are certainly better than the homemade versions.  In the environmental business we have to wear full face respirators with annual fit testing before we will allow an employee to be exposed to airborne contamination.  That is the only way.....otherwise all infectious disease researchers would need is a surgical mask instead of Level A.  They must know something.