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20210223-humidity-mask-stock.jpg
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Title
Two skiers with face masks on each side of a chair lift
Caption
Masks greatly increase the humidity of inhaled air, particularly at lower temperatures, which may help to protect wearers from serious respiratory infections.
Credit
amriphoto / E+ via Getty Images
Description
Two skiers with face masks on each side of a chair lift
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Two skiers with face masks on each side of a chair lift