Indoor air quality research focuses on studying and improving the quality of air inside buildings, such as homes, offices, schools, and other indoor environments. This research area examines the presence of pollutants, allergens, and other harmful substances in indoor air, as well as their sources and impacts on human health and well-being. Researchers in this field often develop strategies and technologies to monitor, control, and improve indoor air quality to create healthier and more comfortable indoor environments. Key areas of study include the effects of indoor air pollution on respiratory health, the role of ventilation systems in indoor air quality, and the development of sustainable and energy-efficient building practices.