This study evaluates the exposure of particulate matter accumulating indoors released from various internal and external sources with the use of the CONTAM computer model. The city chosen for this case study is Dhaka, Bangladesh, one of the most polluted cities in the world (Page and Correspondent, 2018) (Dhaka Tribune, 2018). A new global study report published in April 2018 by the Health Effects Institute (HEI), stated that although more than 95% of the world's population suffers from low air pollution and breathes polluted air, the main victims of air pollution are the poorest nations. The world is so severely affected by air pollution that, according to this report, approximately 6.1 million deaths worldwide in 2016 occurred due to this single cause (healthdata.org, 2018). Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay According to this report, air pollution is the fourth leading cause of death globally, just below high blood pressure, diet, and smoking. However, most of these affected people are inhabitants of low- and middle-income countries, particularly Asia and Africa, where they face very little air pollution both indoors and outdoors (Page and Spring, 2018). Global warming is now a serious problem for the world. as it affects the environment in many ways. Air pollution is one of the impacts caused by global warming. Although complex, there is a coherence between air quality and climate change; air quality can be affected by climate change, and climate change impacts air quality (US EPA, 2018). Numerous sources are responsible for the production of greenhouse gases and major air pollutants. The burning of fossil fuels, the production of bricks, the burning of biomass etc. are some important sources for the production of carbon black which poses a threat to the climate. As one of the major air pollutants, black carbon shows its impact in two different ways. First, it can produce heat in the lower atmosphere by absorbing solar radiation, and second, by settling on Himalayan glaciers it accelerates the melting of glaciers. Both of these two incidents are impacts of global warming. Recent studies have found that particulate carbon is the second largest contributor to global warming (Begum, Hopke, & Markwitz, 2013). Due to its topographical location, the climatic effects on Bangladesh are very significant. Numerous climate changes have been observed in recent decades due to this global warming. Among these; notable are changes in the duration of seasonal variations, droughts, floods, increased water salinity, and sea level rise (Begum, Hopke, & Markwitz, 2013). Although developed countries play the most significant role in the production of greenhouse gases, developing countries also have an increasing role in this regard. In developing countries; biomass burning, vehicle emissions and industry such as brick manufacturing are the main sources of production of major greenhouse gases such as CO2, CO, NO2, black carbon etc. (Begum, Hopke, & Markwitz, 2013). Particulate matter (PM), both coarse (10-2.5 µm) and fine (up to 2.5 µm), has a large effect on climate change and global warming. They can cool or warm the Earth's atmosphere. As mentioned above, particulate carbon has a contribution to global warming. It is a particulate that originates from incomplete combustion. On the other 405,2010).