How Does Vaping Affect My Mouth Does Holding in Your Hit Actually Do Anything? Treehouse Cannabis Treehouse Cannabis Many people believe that vaping is less harmful than smoking, but that's a common misconception. In fact, in addition to nicotine, vapes can contain toxic chemicals that could be linked to cancer, 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 Fresh