TIL a study found that a petri dish exposed to public bathroom air for two minutes with the hand dryers off only grew one colony of bacteria, or none at all, whereas petri dishes exposed to the hot air from a hand dryer for 30 seconds grew up to 254 colonies of bacteria.

TIL a study found that a petri dish exposed to public bathroom air for two minutes with the hand dryers off only grew one colony of bacteria, or none at all, whereas petri dishes exposed to the hot air from a hand dryer for 30 seconds grew up to 254 colonies of bacteria.

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