"Especially those with respirators"? Huh? I thought an N95 mask WAS a respirator. Can anyone clarify?
https://www.opb.org/article/2022/09/26/wildfire-smoke-oregon-air-quality-face-mask/
There must be someone here on qoto who has tooted dozens of times about respirators who could answer this one.
@peterdrake maybe they mean atmosphere supplying respirators or self-contained breathing apparatuses? The ones old people sometimes need to be plugged into.