Environmental Health Officer here… I had a classmate who did a study on this, specifically the Dyson-type where you stick your hands in downwards.

Next time, take a look at what’s there in the 2mm gap on the bottom inside where the water, etc. collects, and where the forced air blows all that material. Remember to not breathe.

There’s a reason why we direct food businesses to use paper towels in the kitchen, not hand dryers. Also, because ain’t nobody got time to properly wash their hands for 30 seconds and then stand there completely drying their hands when they have 20+ chits on the go.