N95 is all the rage these days....
I feel for these kids. It's almost a guarantee kids will be required to year N95s at school.
It's our job to continue poking holes in the mask thing.
N95's are made to filter inhaled particles. Which they do well when worn and fitted correctly. N95's are not made to properly filter exhaled particles. The easiest way to point this out is the mask is not sealed in any sort of actual realistic way when under positive pressure. Those 2 dinky straps arent going to hold it on tight enough nor is the non flexible edges creating any sort of respectable seal.
I like to go back to the military promask (gas mask) examples. Those are made for extremely robust seals. The faceplate on my old M40 is like 3/4 of an inch wide and rubber. That bitch is sealed. It also has FIVE wide straps on it that keep it firmly attached to ones head.
But guess what? Like all masks, this fantastic protection for the wearer offers zero for the outside, as exhaled air is simply pushed out of an exhalation valve. PPE has never really been made to protect external individuals. I can't think of any cases where it has been, actually. Only until fantasy land COVID did people start to pretend to want 2 way filtration masks.
Theres a reason why so many N95's have exhalation valves. It's a pain in the f***ing ass to breathe in them when they dont have one, plus so much air is leaking out the edges on the exhale theres no real protection being added by not having one. You're just torturing yourself by not having an exhalation valve.