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, What harm does second hand fumes from vaping cause to young lungs? Medical experts want to know ABC11 Raleigh Durham Sitting somewhere when a cloud of cotton candy vapor washes over you? If you can smell the sweet scent of a vape, that's not a great sign. What Are the Risks from Secondhand Vape Smoke? NVB Inc. Should I Be Concerned About Secondhand Vaping?