Recent studies have found metal within vaping dispensers, which can be toxic when inhaled. #Aspirus Respiratory Therapist Sarah Schroeder sat down with WSAW NewsChannel 7's Kassandra Sepeda WSAW and Sean Caldwell to 5 Vaping Facts You Need to Know Johns Hopkins Medicine Vaping Harmless. Vape aerosol contains toxic chemicals like formaldehyde, arsenic, lead, chromium, and nickel. They damage lungs. They harm developing brains. They raise cancer risks. We E cigarettes and Vaping Idaho Office of Drug Policy 281: Vaping Information Sheet Does Vaping Cause Lung Cancer?