Vaping exposes users to toxic metals like lead and uranium, study says UC Davis study: Disposable vapes may be more toxic than cigarettes Disposable vapes are more toxic than cigarettes, contain lead: Study WHAT'S REALLY INSIDE YOUR VAPE? You wouldn't drink paint thinner or eat car battery fluid, right? But you might be inhaling their ingredients every time you vape! E cigarettes contain toxic chemicals 150 million vapes end up in the landfill each year in the United States., Their plastic cases will persist in our environment for hundreds of years and many contain lead and mercury that can leach 5 Scary Facts about Vaping