Bleach and acid makes chlorine gas, so if you used an acidic floor cleaner or vinegar then go over that with bleach it’s a bad time.

Bleach and ammonia makes chloramine gas, so you’re right, that’s also a possibility. (and why people shouldn’t clean cat pee with bleach)

I would want to see someone like No Doubt or The Offspring back when they were little garage bands and finding their sound.

Oh, you know what? Robert Johnson. There’s hardly any recordings and his music is phenomenal. It’s a damned shame he joined the 27 Club.

It sounds like someone mixed bleach with an acid and accidentally made chlorine gas.