Does Vaping Cause Secondhand Smoke? 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. Understanding Secondhand Vape Dangers and Their Impact on Your Lungs Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Health experts say not to 'vape' around children, because the secondhand aerosol (it isn't vapor) from e cigs isn't safe for them Kentucky Health News