Quote Originally Posted by Lemur View Post
I know a guy who accidentally created some sort of poison gas in his bathroom by doing that. We're talking the works, vomiting, blindness, breathing problems, trip to the ER. We gave him **** about it for years.

Friendly advice: do not mix complex compound chemicals at random. Interesting things can happen.

-edit-

Addendum: The blindness was temporary, before you ask, and mostly due to his eyes swelling shut.
Ammonia is the usual suspect, but if you're really unlucky, Chlorine or something even more nasty might result.