Is Vaping Worse Than Smoking? St. Vincent's Medical Center Thousands of unauthorized vapes are pouring into the US despite the FDA crackdown on fruity flavors Is Vaping Bad For You? Side Effects, Risks, Nicotine, Marijuana 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,