While this figure is lower than in previous years, it shows that exposure to third-hand smoke still happens
Lee Institute of Health for Health Policy Studies and the Department of Humanities and Social Sciences
Among these substances are nicotine, carbon monoxide, carbon dioxide, tar, ammonia, formaldehyde, acrolein, acetone, polycyclic aromatic hydrocarbons (benzo (a) pyrene), hydroxyquinones, nitrogen oxides, and heavy metals (nickel, cadmium, chromium, and arsenic) [20]
The merchant must also mark each package "Unaccompanied Purchase." Please remember that each package or container must have its own CBP Form 255 attached , the most important step to follow in order to gain the benefits allowed under this procedure