Disposable vapes ban 'could lead to relapse in people trying to quit smoking' Vaping The Guardian 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 Vaping: High lead and nickel found in illegal vapes UC Davis study: Disposable vapes may be more toxic than cigarettes