Yorkshire Smokefree Don't Be Fooled: Vaping Is Just as Dangerous as Cigarettes Flavourings make e cigarettes more harmful. Another good reason to ban them SEATCA Vaping really is THAT bad @LungAssociation says vaping isn't just inhaling harmless water vapor. Liquid in vapes often holds harmful drugs & chemicals, like nicotine, propylene glycol (found in antifreeze), carcinogens, acrolein ( Chemicals Does Vaping Harm Veins? Elmore Medical