Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Vapes on black market may contain toxic chemicals, pesticides, harmful flavorings Dank Vapes, TKO and Other THC Vaping Brands Are Linked to Illnesses, C.D.C. Says The New York Times Most young users put disposable e cigarettes in trash, creating huge streams of toxic and hazardous waste, as companies fail to take responsibility Vape Waste 2 Disposable vapes release more toxic elements than tobacco smoke