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. Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Hidden Dangers of Secondhand Vaping Emory Health Digest