Specifically, the only confirmed correlations to any class of products were to THC cartridges using tocopheryl acetate (colloquially, Vitamin E acetate) as a di

Specifically, the only confirmed correlations to any class of products were to THC cartridges using tocopheryl acetate (colloquially, Vitamin E acetate) as a diluant/cutting agent. That should never have happened in legitimate THC products, but it was pretty much guaranteed to happen with street and counterfeit carts. A similar sort of thing can happen with nicotine e-liquids if they're made with oil/lipid-based flavourings - stuff that people who don't know what they're doing might pick up from grocery, craft and health food stores. (Flavourings sold for vaping are water-soluble. That's not to say that all of them are as safe as they could be, particularly as it concerns saccharides, which can produce carcinogenic compounds when overheated/burned.) There have been a small handful of cases worldwide of idiopathic reactions to whatever was being vaped by the user; that's pretty much par for the course with anything that isn't pure air or water going into a human - somebody, somewhere is going to going to be hurt by something literally everybody else's body ignores.