2 points
It doesn’t seem plausible. After wiping your hands dry the bacteria either stayed on your hands or were transferred to the paper towel. I can’t see a path to the air.
Blasting your hands with air fast enough to blow off whole water drops and shatter them would put bacteria in the air.
I presume that when testing their air driers they use a sterile room and thoroughly washed hands in hospital type soap so any bacteria went down the drain and only sterile water was blown into the air
2 points
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