Tobacco smoke is not limited to second hand smoke.

Abstract

We read with interest “Thirdhand Smoke Exposure Induces Oxidative Damage, Initiates Skin Inflammatory Disease, and Adversely Alters the Human Plasma Proteome” by Sakamaki-Ching et al.,1 which is reported by the authors as the first clinical study identifying the molecular adverse health effects of third-hand smoke (THS) dermal exposure in humans. Tobacco smoke exposure is not limited to Second-Hand smoke (SHS), THS, known as the combination of gases and particles that, after having smoked, persist on surfaces, in dust or even on people's hair, skin and clothing.