My experience: whatever fluids that were in the sink (soap scum/mine or other people's dirty water) flying into my face after being hit with Dyson-powered wind, me immediately jumping a foot back. Made me wonder how did they ever test this product before release.
This contraption: https://www.dyson.com/hand-dryers/dyson-airblade-tap-overvie...
When my work center switched to paper there was a brief period of people complaining about too much paper. the sad part was them, it was the lazy people who would just drop their used paper on the floors between the doors. Our restrooms have a vestibule, about four feet in depth, with doors on both ends. Building services had to add a trash can there. Anyone else run into behavior like that? To explain further, people used the paper from drying their hands to open the doors
FTFY.
It don't like to be blown in the face with poop smelling stale air that any idiot can figure out would stir up more junk than possibly could be healthy, plus the hands feels jucky afterwards.
Then I learned how to use one.
(Which of course is a UX issue, they shouldn't need training)
That said, I think the original design wasn't too amazing, though it did look cooler than most of the existing dryers at the time. I vastly prefer the newer design (https://www.prodryers.com/Dyson-Airblade-V-Hand-Dryer-HU02-S...) which I think does a better job. And it's certainly harder to touch the sides which is a problem a lot of people have with the original.
However, they are responsible for one of the best memes ever:
