About 3 billion people on earth have no access to clean fuel for household cooking and lighting. According to the World Health Organization (WHO), worldwide 1.5 million deaths occur annually due to exposure to indoor air pollutants from the burning of solid fuels in household cook stoves. Indoor air pollution has been receiving significant attention from scientific community than its counterpart ambient air pollution in recent years for its role in infant mortality in developing countries. In Bangladesh, the indoor air pollution (IAP) has been recognized as the major cause of death among children of age five year and less. According to recent statistics from World Health Organization (WHO), IAP is the major cause of acute respiratory infections (ARI) and acute lower respiratory infections (ALRI) among women and children in rural and poor slum households in developing countries. Bangladesh is no exception to these cases. The primary pollutants are particulate matters (PM2.5), carbon monoxide (CO), volatile organic compounds (VOC) and trace elements resulting from emissions from inefficient cook stoves in poorly ventilated households. We have carried out air quality monitoring in slum households in Deltin 7 bangladesh, Saidpur and Parbatipur. Interventions for exposure to smoke, PM2.5, CO, VOC include installation of efficient cook stove to reduce fuel cost as well as improving air quality to the WHO acceptable standards. Our recent data from Bangladesh will be discussed in this presentation.