The Impact of E Cigarettes and Asthma: What You Need to Know What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Many people believe that vaping is less harmful than smoking, but that's a common misconception. In fact, in addition to nicotine, vapes can contain toxic chemicals that could be linked to cancer, Is vaping really safer than smoking? Norman Vince Hill, MD, and certified tobacco treatment specialist Lindsey Casse break down the hidden risks of vaping, its impact on your health and why it's