I don’t understand how the machines collect bacteria. Is it because of the humidity? Confined air in the space?
In: Biology
There’s bacteria everywhere, on every surface, and even floating in the air. It’s not notable when there is bacteria somewhere, it’s notable when there isn’t!
This sounds like a question that was sparked by some particular headline or source. If this is the case, would you be willing to share it with us? We may be able to give more specific answers. [This youtube video explaining a study from about 5 years ago](https://www.youtube.com/watch?v=3UKWOPWrIi8) is the last thing about hand dryers and bacteria that I specifically remember hearing about, so there may be a new finding I’m not aware of.
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