Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London 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. Vaping may be an effective way to quit smoking during pregnancy New Scientist Chemicals Animal Study Shows Harmful Effects of Secondhand Smoke Even Before Pregnancy Duke Health Study finds vaping in pregnancy harms both mothers and babies