No, except from surgery.

I never went under a general anesthetic until I had back surgery. That was fine, but two months later I needed to get my 50-year old mandatory colonoscopy. That i think they use a different drug, I was supposed to be in a twilight, but I was in a lot better place. It was simply amazing. I was flying thrugh the universe as fast as could be, blowing by stars, through solar systems, into open space, then into more stars, lights, beautiful lights. I know it was drug induced, but incredible. They found some things in the results (nothing life threatening) but want me to have another
c-scope every two years. Even with the literal shit you have to go through the day before and the embarrassment of the whole thing, I would love to have that experience again.