Effect of second hand fumes from vaping on young lungs How secondhand smoke, thirdhand smoke & vaping affects kids Study suggests switching from smoking to vaping indoors may reduce children's secondhand exposure to nicotine The Impact Of Secondhand Smoke On Children Smokefree Clinic 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.