I've since met several people since then who have issues with only THC. The pathway for CHS from THC is well documented in science, it truly does exist.

CHS is MOSTLY caused by azadirachtin issues, but there are definitely THC-only suffers.

The "ONE" individual I was talking about is the only person I talked to about using low THC strength cannabis. I've met many others who have issues with only THC. Yes, they've tested clean cannabis without aza in it.

Thanks :D