Sleeping baby safety tip: Keep baby's environment smoke and vape free. Secondhand smoke in areas where a baby sleeps or spends time, like home or the car, increases the risk of health problems. How Bad Is Second Hand Vape Smoke Is Second Hand Vape Smoke Dangerous? Secondhand Smoke vs Vape: What the Science Says Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice E Cigs and Second Hand Vaping: Dangers and Protections