[Bloody Sam Roberts]

“So if you have a physical covering with one layer, you put another layer on, it just makes common sense that it likely would be more effective.”

Yup. Just like draining spaghetti through two colanders will stop more water than just one colander.

[PIF]

Wearing one mask lowers you O2 intake; wearing two masks lowers it even more.

Good O2 range is in the 90s; with mask that lowers to the 80s with two you better be sedentary or risk blowing out a lung.

Low O2 intake is the cause of many health problems including death.

[Hatteras]

I literally Stopped reading (figuratively speaking) when I literally see “literally” used figuratively as “literally”.