What chemicals are in a cigarette? What does smoking do to your body? Cancer Research UK E cigarettes contain hazardous substances, addictive and harmful E cigarette flavors are toxic to white blood cells, warn scientists Study: 1 in 5 Believe E cigarettes Have Less Harmful Chemicals Study finds e cigarettes may be as harmful as smoking tobacco UPI.com Promote e cigarettes over harmful tobacco smoking, say experts Vaping The Guardian