Tobacco Smoke, Vaping, and Asthma AAFA.org Secondhand smoke from vaping could be harmful to children: study ABC13 Houston Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Youth Know the Risks Can Smoking and Vaping Cause Back Pain? National Spine Health Foundation Vaping is not safe and is harmful to health, WHO says, both for users and bystanders South China Morning Post