E cigarette or Vaping Use Associated Lung Injury (EVALI) 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. Pulmonary Injury Resulting from Vaping or e Cigarette Use: Imaging Appearances at Presentation and Follow upRadiology: Cardiothoracic Imaging Vaping Q & A LHStoday