Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Study: E Cigs Better Than Gum, Patches in Helping Smokers Quit Things to Put in Your Mouth Instead of Cigarettes: Healthier Alternatives for Smokers SMOKO E Cigarettes Vaping Cannabis Produces Stronger Effects Than Smoking Cannabis For Infrequent Users Johns Hopkins Medicine Vaping substantially less harmful than smoking, largest review of its kind finds King's College London