Oops. While doing my annual sock washing marathon, I think I used too much bleach. And I can smell bleach all over the place right now. ugh.
Back in fifth grade science class we experimented with ammonia. My stupid friends and I discovered that if you inhale it even slightly, you can feel it going down your throat, and it burns. It was a funny trick to play on people -- "hey, smell this!" while sticking a cup of ammonia under their nose.
It's all fun and games until someone gets permanent dain bramage.