Seasoned vapers like to know exactly what is in the cartridges they buy, especially if they vape THC, the main psychoactive ingredient in marijuana. With at least 805 cases of probable or confirmed vaping-related lung injuries and 12 deaths under investigation, cartridge users know that doing their research now can be a matter of life and death.

Yet, even amid the signs that vaping substances of dubious provenance could be a mortal mistake, veteran THC vapers are willing to to take their chances.