Mansour Sarafraz - Department of Environmental Health Engineering, Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Mohsen Sadani - Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Fahimeh Teimouri - Environmental Science and Technology Research Center, Department of Environmental Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

An air pollutant includes the form of gas or aerosol that may be available as solid, liquid, radioactive and bioaerosol. Air pollution hasaffected all urban areas in devolving countries(1). It has been estimated that if there is no intervention in air pollution control, the mortalitynumber increases to 6.6 million deaths by 2050, especially in Asia(1). Indoor aerosols are a global issue because of their impacts on public health (2). Indoor air pollutants are one of the air pollution constituents and could be generated from indoor or outdoor transportation(3). At first, attention to indoor air pollution performed in the 1960s, when the preliminary measurements of indoor pollutant concentrations were made(4). It has been estimated that about 85% of indoor dust comes from outdoor, such as fossil fuel burning, crustal materials, and road dusts(5). People in developed countries spend approximately 90% of their time indoors. This percentage rises even higher for sub-populations such as infants and young children, the elderly, and people living with disabilities. Given this high percentage that most people spend indoors, it is important to recognize that human exposure to pollutants occurs not only outside of buildings but also inside them(6). This study aimed to find the relationship between indoor air pollutants and their contributions rates on the public health especially in developing countries. Eventually, the obtained evidence caused to understand the critical role of indoor environments in driving exposures to inhaler pollutants and provided executive actions to control them in vulnerable groups including; infants, children, and adults, respectively