The party of science would like you to know that a mask made of any random cloth blocks deadly viruses...but only those coming from the perfectly healthy person wearing the stupid thing, who is somehow still at grave risk of instant death from YOUR cooties unless you're wearing one too. His mask can't block anyone's viruses except his own--which he's presumed to be spreading with the vigor of a hippo spraying its poo.
Because people without symptoms can magically still transmit the virus. Even though that's never been shown to happen in a single case of Wu flu.
The party of science would like you to know that a mask made of any random cloth blocks deadly viruses...but only those coming from the perfectly healthy person wearing the stupid thing, who is somehow still at grave risk of instant death from YOUR cooties unless you're wearing one too. His mask can't block anyone's viruses except his own--which he's presumed to be spreading with the vigor of a hippo spraying its poo.
Because people without symptoms can magically still transmit the virus. Even though that's never been shown to happen in a single case of Wu flu.
His mask, no matter WHAT kind, CAN'T BLOCK his OWN virus.
NO masking system
has EVER been shown
to slow spread of ANY known CONTAGION.
Full Stop, No Negotiations.
N.o.N.e.
NO mask system including FULL RESPIRATORS, has EVER been found
to limit spread of A.N.Y. contagion.
Not viral, not bacterial, not even fungal.
NONE is slowed by ANY mask system.