mm wrote:
On Jay Leno.

Package of those thick-paper or cotton masks that go over your mouth
and nose. Includes the words:

"Mask offers no respiratory protection".

What a deal!

Headlines.

It's not a gas mask. It's just a particle filter. Since there is no
tight air seal, particles can go around it too.

--
LSMFT

Simple job, assist the assistant of the physicist.