Over 1.2 billion tobacco users worldwide and almost 8 million tobacco-related deaths make tobacco control a public health high priority1 . While the number of smokers has fallen in high-income countries (HICs) in recent years, the number of tobacco users in many low- and middle-income countries (LMICs) has steadily increased2 . In addition to active smoking, inhalation of secondhand smoke (SHS) is a major cause of premature death and disease, especially among women and children.