The Negative Impact of E Cigarette Use on Heart Health Nonnicotine vapes may be marketed as safe, but many still contain chemicals, have unknown health effects, and aren't FDAregulated. Teens are using them more ofteneven alongside nicotine vapes. No ecigarette is riskfree. Vaping and Electronic Cigarette Toxicity Overview and Recommendations (Project VECTOR) Intrepid Lab E cigs are exploding in vapers' mouths, leaving gruesome injuries The Seattle Times