5 ms·
This was obvious even before COVID-19. I used N95 masks before the pandemic for stopping industrial particulates and the box clearly stated that bad fitting re
by hilbert42 6y ago
This was obvious even before COVID-19. I used N95 masks before the pandemic for stopping industrial particulates and the box clearly stated that bad fitting rendered them ineffective. Moreover, the N95 instructions said if you had a beard the mask was ineffective. (Damn obvious really!)
Why at this late juncture are we reinventing the wheel?
More madness, more wasted time.
- deleted 6y ago[deleted]