> If you go to a Canadian hospital wearing an N95 these days there's a good chance they will insist you to take it off in favour of a "clean" surgical mask with gaps around the sides and nose.
Wouldn't that just be because of protocol, ie. they don't know if you, a member of the public, actually have a legit N95 mask, or if you know how to correctly implement it, etc.
Incidentally, if you want to validate 3M N95 masks, 3M has a web site for that.[1] You type in the code on the bottom of the box and 3M checks it. You can only do this once per code; the site will tell you if a valid code has been used before. They suggest signing and dating the box after doing this, to indicate that check has been done.
How do they know that one is not wearing a fake surgical mask then? The obvious conclusion is that parts of the medical establishment are still being dumbasses about masks, two years into the pandemic.
Wouldn't that just be because of protocol, ie. they don't know if you, a member of the public, actually have a legit N95 mask, or if you know how to correctly implement it, etc.