Vaping lung illness: Harmful chemicals found in e cig flavoring juice Vaping releases toxic chemicals, including heavy metals, as well as ultrafine particles that go deep into the lungs. These increase the risk of heart and lung disorders. 5 Vaping Facts You Need to Know Johns Hopkins Medicine Vaping Vaping Versus Smoking: Are Electronic Cigarettes the Savior? Arteriosclerosis, Thrombosis, and Vascular Biology How do vapes work and what chemicals are inside them? BTN High