Is There a Link Between Vaping and Lung Cancer? 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. FDA adds warning labels to e cigarettes; youth use of nicotine devices in Minnesota has skyrocketed News southernminn.com Have you been thinking about trying e cigarettes? Think again! Most e cigarettes contain #nicotine and harmful emissions. Some products claiming to be nicotine free have been found to contain nicotine. Nicotine is highly addictive