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: The Health Risks of Vaping Y a t'il des e liquides sans propylne glycol E liquide sans propylne glycol (PG) Neovapo Test : Classic Blond Nicorea Naturacig Vaping Post Vaping and E Cigarettes Hazelden Betty Ford