So they don’t appeal to me, but they might to people where the stuff is regulated And they slip through. I don’t know if this includes Australia or not. Just saw an article on such in scientific American. Vape Additives that Mimic Nicotine Are Potent—and Largely Unregulated “possible risk” usually means “we don’t know if there is a risk or not. Especially if we avoid looking”. Doesn't mean there aren’t of course. Designer drugs have a rep for weird and sometimes dangerous side-effects.