Online: Up In Smoke (or Vape) Health Consequences of Smoking, Vaping, and Air Quality on the Human Body Child Care Resource Center CCRC Vaping may seem harmless, but most e cigarettes contain nicotine a highly addictive substance that can impact brain development in teens and young adults. It can also affect mood, attention, and increase the risk Cases of Vaping Related Lung Illness Surge, Health Officials Say The New York Times Dangers of Vaping Chart Poster