COPD and Vaping: Understanding the Risks and Long Term Effects New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking Secondhand smoke Public Health County of Santa Clara Study uncovers the hidden dangers of secondhand vape exposure to children 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.