We skipped the gas chamber in basic, as it was too cold that day. I DID have an experience in high school, though. So, in the cafeteria, right when the bell rang to end the lunch period, a huge mass of hundreds of people all get up to move towards the doors. I could see everyone in front of me coughing as they reached a certain spot. I was pretty much stuck in the herd, so I couldn't stop or evade that spot, plus I didn't really realize what was going on. Sure enough, soon as I reached that spot, I started coughing involuntarily, too, throat tightened up like I was being choked, eyes started watering, etc. It's the easiest, pussiest experience ever with mace, and it was enough for me to know I don't wanna do anything harder