Coronavirus : Are Masks effective? | The Wacky Duo ...
More costly than a surgical mask; PM 2.5 rated mask only block 2.5 microns, NOT effective for virus. You need to find one that is BFE + PFE rated as well. 95 Mask are a tight git and used to PROTECT the wearer from harmful particles. Best used if you are a medical staff or a frontline facing many customers in a day. Full Face Mask