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[–] RealBiggly 2 points 0 points (+2|-2) ago 

The INSIDE of your mask is not what you measure. You want to measure the air outside it.

You want to know if it's affecting you? Measure your blood.

FINK about it. You cannot claim the mask is somehow killing you if your blood oxygen level is fine.

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[–] goatsandbros 1 point 5 points (+6|-1) ago 

The inside of your mask is what you're breathing.

Also: does the OSHA standard measure blood O2 levels?

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[–] RealBiggly 5 points -5 points (+0|-5) ago 

Fuck your yankee OHSA shit, I'm talking reality.

Boot licker