Don't Go Up in Smoke: E Cigarette Safety Electrical Safety Foundation International E cigarettes should be offered to smokers, say doctors BBC News For e cigarettes, public supports health warnings & ban on sales to minors National Poll on Children's Health 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.