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If one of the vectors (methods of spreading contamination) of the pandemic is by airborne transmission - as, for example, with Swine Flu - face masks would help filter the microorganisms from the air, greatly reducing the chance of inhaling the pathogens (germs).

However, not every pandemic is spread through the air; for example, the HIV virus is spread by fluid contact. In that case, the only way a face mask might help would be by covering an open wound in or near the mouth (like a cut, or a cold sore) while kissing someone who might have HIV or AIDS.

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14y ago

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