Juul study shows secondhand vaping emissions are less toxic than cigarette smoke In secondhand vape, scientists smell risk American Heart Association Did you know smoking leaves behind more than just smoke?Thirdhand smoke is the toxic residue left on clothes, furniture, walls, and even toys after someone smokes or vapes. These hidden chemicals Second Hand Vaping: Minimal Impact Compared to Smoking How secondhand smoke, thirdhand smoke & vaping affects kids