I know people who have had a bad trip, but not a single person who has only had bad trips. I would say confidently that 95% or higher, probably closer to 99%, of the experiences I and the people I know have had are positive. I don't think there's a smokescreen effect at all. There's a reason people love these drugs. I think suggesting that 33% of people have horrible experiences on these things is no where close to reality. These are powerful drugs that need to be respected, but if you take them in a good mindset in a safe place the vast vast vast majority of the time it's going to be an amazingly positive experience.