Is Second Hand Vape Smoke Bad For You? Learn How to Avoid its Side Effects Is Secondhand Vape Smoke Bad For Pregnancy? Experts Explain The Risks About one in four adults in California report being exposed to secondhand smoke or vape in the past two weeksoften on sidewalks, at home, and in recreational spaces like parks and beaches. Does Vaping Cause Secondhand Smoke? The health risks of secondhand smoke are widely understood. But what about secondhand vaping? 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.