Bitrex
Bitter agent used in fit testing
Episodes
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#4805: How a Pig Bladder Became a P100 FilterFrom Roman miners using animal bladders to 3M's electrostatic breakthrough — the strange history of breathing protection. -
#1057: When Tactical Cosplay Fails: The Physics of Fallout FiltersIs your "tactical" gas mask a lifesaver or just a chin strap? Discover the physics of fallout and why industrial gear beats the marketing.