hydrochloric acid

I received a 24 hour pee test from quest labs where I must pee and add it to a large container filled with apparently hydrochloric acid. the first time I poured my pee in I noticed the vapor and, yk if the person who gave it to me or the paper said to be careful with it I would've been more careful. I breathed it in for like 2 seconds because I was staring at it confused why my piss was vaporizing.

only on the second time adding my pee did I see the warning sign on the back of the container not to inhale or touch and to be extremely careful with the chemical. I'm supposed to apparently keep this shit in the fridge too which WAS on the instructions so I put it in my fridge the first time I peed and added it to it. is all of my food in my fridge screwed? the container has a lid. I'm beyond pissed (literally) that the only warning is on the back of the container...