Vaping: How E cigs Work (Infographic) Live Science Want to quit smoking? Vaping is not the answer E CIGARETTES DANGER FOR YOUNGSTERS NEEDS URGENT CONTROL Mega Story Vaping is often marketed as a safer alternative to smoking, but many vape products contain nicotine, harmful chemicals, and heavy metals that can harm developing brains and lungs. Smoking VS Vaping: Which is More Harmful to Your Dental Health? Riverside Dental 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.