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Indoor Air Quality (IAQ), as defined by the EPA, is the air quality inside and around buildings and structures, particularly as it relates to the health and comfort of building occupants. IAP, on the other hand, refers to the presence of pollutants such as Volatile Organic Compounds (VOCs), Particulate Matter (PM), inorganic compounds, physical chemicals, and biological components at high quantities in the indoor air of non-industrial buildings, all of which can have detrimental health effects. IAQ has formed and evolved as a scientific field in order to safeguard people from such contaminants. Pollutant concentrations, environmental conditions (temperature, airflow, and relative humidity), light, and noise are the key characteristics used to assess IAQ.