Johns Hopkins researchers find thousands of unknown chemicals in electronic cigarettes Hub Are they safe to inhale?': Vaping liquids in Canada contain potentially harmful chemicals, tests show CBC News Vaping Student Health & Well Being Don't be fooled by the smoke or the flavor. Vapes and cigarettes both contain toxic chemicals that can harm your body. #BeSafeDontVape #TobaccoFreeGeneration How long does vape smoke stay in the air? Does Vaping Cause Lung Cancer? What We Know (and Still Don't)