The CO2 toxicity does seem to be ignored. It is carcinogenic
Posted on: October 14, 2020 at 13:43:59 CT
SuperTone
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the long term affects of CO2 toxicity can be very harmful.
Masks would normally be considered hazardous working environments because they are not designed for prolonged use. They don't have mechanisms to deal with CO2 toxicity like masks designed for long term wear.