Secondhand smoke and secondhand aerosol It's World No Tobacco Day. Secondhand smoke is harmful. Children exposed to secondhand smoke are at a 50 to 100% higher risk of acute respiratory illness. Say NO TOBACCO! Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN More children are being poisoned by e cigarette liquids. Here's what parents need to know E Cigs and Second Hand Vaping: Dangers and Protections Tobacco and Nicotine Products: Old, New & Dangerous for Kids HealthyChildren.org