Metals found in disposable e cigarette vapor could pose health risks American Chemical Society Vaping: High lead and nickel found in illegal vapes Disposable vapes are more toxic than cigarettes, contain lead: Study With more vapes getting thrown away every year, it's become a growing environmental problem. Vapes contain heavy metals, nicotine, and other chemicals, which leach toxic pollutants into the soil and waterways when E cigarettes: Facts, stats and regulations