Eli5: why do firefighters wear oxygen masks when fighting a building fire, but often not in a wildfire? You’re still breathing in smoke…
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Practicality
House fires are far more hazardous, are usually contained before firefighters breach, and require shorter times inside the fire itself. Wildfires are worse in every way but the hazardous gas part. Mobility and longevity are more essential against wildfires and a 40-min air tank isn’t going to help if it takes hours to fight.
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