(Oops...I noticed a couple minutes after posting that the present article is about hair dryers and the article I cite is about hand dryers. I would have deleted this, but someone had commented by then which disables delete. I could edit this to replace the entire contents with "[deleted]", but someone has commented on the assertions in the hand dryer article, so I'll leave this up, despite it being an embarrassing monument to my poor reading comprehension)
There may be a downside to these very fast hot air dryers: "Using a Dyson hand dryer is like setting off a viral bomb in a bathroom" [1].
There was some HN discussion of that article [2].
[1] http://arstechnica.com/science/2016/04/dyson-dryers-hurl-60x...