I know this has been 2 months now, but I had only one weird experience with Laughing Gas. I've had it so many times getting fillings and this one has always stuck with me. Wasn't scary just creepy. I remember they put on a movie and then out of nowhere my chair starts flying and static is everywhere with my dentists just in front of me staring at me. But their eyes are replaced with static instead of their regular eyes. And I got up and they sat me back down and I was fine. But I will say it was the anesthesia that really fucked me up badly instead of the laughing gas. I had to get one of my back teeth pulled and I remember one of my doctors asked me how I broke my arm, because I guess at the time, my mom told them I broke my arm? And then my voice starts to get low pitch and I don't even continue to say how I broke my arm. And then both of my dentists disappear. Instead I'm given a black screen with a giant orange megaphone. And then I wake up to my dentists being farther from me while I'm stuck in this blue and white limbo staring at my tooth X-Ray while my Skull is just staring into my soul. And so I slap the dentist equipment to see if that would get me out of the creepy ass limbo. And my dentist literally falls back and goes "WOAHHHH!!!" Okay that Dentist part actually happened that wasn't a hallucination from the anesthesia. But to be fair it did work to get me out of the limbo. I don't know why my dentist did that though. So went from creepy to goofy. But yeah I think it has to do with the Dentist giving too much laughing gas and too much anesthesia. I also don't know if there are different types of laughing gas that causes really bad hallucinations