5 things everyone should know about vaping Health & Well Being University of Colorado Boulder Vaping marijuana linked to lung injury in teens, study says Get Smart About Drugs The W.H.O. estimates over 100 million people now vape globally, and most believe they're making the safer choice. But safer than smoking and safe are not the same thing. Vaping still delivers Vaping isn't just vapor. It's an aerosol filled with nicotine and chemicals that go deep into your lungs and straight into your bloodstream. Many vapes contain: Highly addictive nicotine Sleeping baby safety tip: Keep baby's environment smoke and vape free. Secondhand smoke in areas where a baby sleeps or spends time, like home or the car, increases the risk of health problems.