Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. E cigarettes 95% less dangerous? Myth, scientific lies, and manipulations AT Schweiz Amazon.com.be : cigarettes lectroniques : Hygine et Sant Dangers of Vaping (Printable PDF) 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 risk free.