I’ve gotten it at the dentist and didn’t care about anything that was going on. The dentist could have turned it all the way up and I would have died comfortably and happy.
He was deliberately not breathing it in and thrashing around so he could put on a show. Just a little bit is enough to calm you down.
Nevermind - it’s nitrogen, not nitrous oxide. Still, there would be no suffering if he would just breathe.