Amazon quietly pulls marijuana vape materials from site amid illnesses, deaths MPR News Do you know what's in your THC vape? THC vapes are increasingly being shown by testing to contain synthetic substances with increased risk including unexpected effects due to differences in strength. Vaping weed is popular, but there are many unknowns about its safety : NPR THC Vape Oil and Cannabis Vaping Products Lightshade THC Vapes Explained: What They Are, How to Use Them, Different Types, and Common Questions Answered Lake Effect Vermont Dank Vapes, TKO and Other THC Vaping Brands Are Linked to Illnesses, C.D.C. Says The New York Times