I don't want to appear a naysayer, but everyone should be aware that N95 masks usually aren't effective at the intended level because of the lack of a fit test

I don't want to appear a naysayer, but everyone should be aware that N95 masks usually aren't effective at the intended level because of the lack of a fit test and training by the non-professional users. See: https://news.ycombinator.com/item?id=23957506 https://news.ycombinator.com/item?id=23957506