There probably IS a product out there that is very harmful, whose reformulation is causing random deaths.  I suspect it's the vitamin E tocopherol acetate as a perservative, which is not meant (or ever studied) to be freebased / vaporized. I bet if you busted into your medicine cabinet, ground up random shit with ethanol and then vaped it, you'd have some serious problems since you'd be creating very exotic and unknown compounds in doing that.  Substances meant to be taken orally, topically, anally (as in suppositories) aren't supposed to be heated to just under their smoke point and vaporized Think.  Use your brains folks.    Some stupid unprofessional ass millenial drug fuck read online that vitamin E was a preservative and they thought< "oh this is good I can put it in there and its' better than like nitrites in sausage or some shit" No testing, no chemistry background, just people putting shit together and selling it at these vape places "As a Cosmetic and/or novelty and/or incense" legally They're doing this with SPICE also   (vape liquid found containing SPICE), which as you may recall is "synthetic marijuana" meaning some rando quasi-legal cannabinoid analogue that is absolutely NON NATURAL (never occurring in nature) and turning people into cannabalistic zomboids  (serious--spice made a dude eat another person in the back of a cab in florida like 12 yrs ago)