Here's the thing about red pepper flakes: even when you wash and dry your hands really well after you're done? The oil that makes them spicy is still on your hands. So when you absentmindedly scratch your chin, or rub your eye, or go to the bathroom, every single thing you touch will immediately burst into flames.
Every. Single. Thing.
Oh, how it burns.
Similar scenarios have played out at genius labs. Ouch.