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Old Dec 13, 18, 5:45 pm
FlyerTalk Evangelist
Join Date: Jan 2007
Location: BOS/UTH
Programs: AA EXP, LT PLT; QR PLT; Bonvoy LT TIT
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A mask will help greatly with particulate matter (the result of burning off crops, etc., visible smoke, generally) but not really with gasses like vehicle exhaust fumes.
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