Well, we produce ammonia! Just pee in a toilet that has bleach in it to clean it out. It'll burn your throat at least if you're not careful. Happened to me once. The trustees put bleach in the john to bleach it out some and the fumes couldn't be seen but man my throat hurt for about 3 days!

If you’re not Paranoid, You’re
not paying attention
Be a Sheepdog
JYD#105