What Does Vaping Do to Your Lungs? Johns Hopkins Medicine E cigarettes can result in 'Popcorn Lung' E Cigarettes, Vaping, and Other Electronic Nicotine Products: Harm Reduction Pathways or New Avenues for Addiction? Psychiatric Times Nothing good comes from smoking , and vaping isn't a safe alternative. E cigarettes often contain nicotine and other harmful substances, and studies show that young people who vape are more likely to Heated Tobacco Products, Cigarettes, and E Cigarettes: What's the Difference PMI Science