I really don't know the truth.
In the beginning, Fauci told us over and over that a mask would not do any good. Only medical people need them.
At this point, I think millionaires are being made on mask sales, so gotta keep it rolling.
In addition to that, proper air filtration will reduce the risk of transmission or airborne viruses, but MERV 13 media has now been diverted to masks, that are as worthless as the politicians who force their usage. The CDC says masks don't work, upgrade to MERV 13 or higher if your system allows. Then .gov diverts the media so you can't upgrade. But hell, it looks good and shows that the bloodsucking, worthless bastard local politicians care.
