Been wanting to write on this, but Harvard Health blog beat me to it! Do you know that the hot air hand dryers in rest rooms may be spreading germs, while drying your hands? Ever wondered where the hot air inside it comes from? No? Oh dear! You should read this!
https://www.health.harvard.edu/blog/the-bacterial-horror-of-the-hot-air-hand-dryer-2018051113823
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