Cigarette lectronique : Puff, un juteux business attaqu de toutes parts Capital.fr 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. Coronavirus may be worse for smokers and vapers. And youth won't save you. Vaping and Stroke Risk: New Study Hypes the Wrong Conclusion American Council on Science and Health