Where are you getting the idea CHS does not exist?

Look, I've personally spoken with about a dozen people now who don't have CHS from aza. They've completely removed the aza/neem from their grows. They still have CHS from THC.

I've even spoken with people who've used THC isolate from clean plants, and they have a massive CHS reaction. FOR THEM the issue is purely from the THC.

YES! Though it is very rare, Cannabinoid Hyperemesis Really Exists!

I would have commented earlier but I've almost quit using this platform completely. Didn't see your comment till just now.