Should I Be Concerned About Secondhand Vaping? Queensland Health We said what we said. Vapes are filled with heaps of nasty chemicals that can be harmful to your short and long term health. They can Instagram What Happens When You Quit Smoking & Start Vaping Vapourcore What Happens When You Quit Smoking and Start Vaping Instead? 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 Can vaping damage your lungs? What we do (and don't) know Harvard Health