I’ve never heard of this vomiting effect but I’m not surprised about effects upon appetite and digestion as well as the effect showers have upon stoned individuals. I had my day in college, then it started making me paranoid which was no fun, so I stopped. But, marijuana is known to have a strong effect upon inappetance to the point of being prescribed to chemo patients. I also recall very well how cleansing a shower was when I got too stoned, seemed to wash the buzz right out, I could think much more clearly afterwards. Like a strong pot of coffee for a drunk, I guess.
People who think marijuana is some sort of panacea are usually deluded, they’re searching for rationalizations of their habit. Recreational use for a buzz has nothing whatsoever to do with medical use, though.
People who think marijuana is the worst thing ever and anyone who uses it is some sort of criminal reprobate are deluded on the opposite end of the scale, though. I don’t do it anymore but moderate occasional use isn’t going to hurt anyone, not in my opinion.
I don’t smoke it but I certainly know a lot of people who do, and I have never seen the vomiting effect.