Flavored tobacco sales restrictions and e cigarette use among California high school students Disposable vapes are more toxic than cigarettes, contain lead: Study Vapes Clouds Contain Absolutely Horrifying Chemicals, Scientists Find UC Davis study: Disposable vapes may be more toxic than cigarettes Years ago, vaping was thought to be a way to stop smoking. However, in the following decades other troubles come from vaping including very high levels of nicotine delivery, battery explosions