In secondhand vape, scientists smell risk American Heart Association Secondhand Vape Exposure: Effects, Who's at Risk, and More Secondhand and thirdhand vape exposure is a serious issue, especially when children are involved. Unlike firsthand vaping, which directly introduces harmful chemicals into the lungs, secondhand exposure affects those nearby, A second hand vape cloud contains toxic chemicals. , Think about it, before you vape with people in your car. Swimming Victoria Facebook