Have you been thinking about trying vapes or e cigarettes? Think again! Most e cigarettes contain nicotine and other harmful substances. Some products claiming to be nicotine free have been found to contain nicotine. Nicotine The evidence keeps piling up: e cigarettes are definitely safer than smoking Science The Guardian E cigarette Vaping Q&A Allegro Pediatrics Fast facts on the effects of e cigarettes and vaping E Cigarettes and Pregnancy Maternal Infant Health CDC 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.