I read the previous post on this that appeared on HN a couple of weeks back. https://news.ycombinator.com/item?id=20282837 https://news.ycombinator.com/item?id=

I read the previous post on this that appeared on HN a couple of weeks back. https://news.ycombinator.com/item?id=20282837 https://news.ycombinator.com/item?id=20282837 My 3 year old used to close her ears anyways when near any of these hand dryers but now i warn her when one is about to turn on.