Indoor Air Quality (IAQ) is a complex issue. In a typical indoor environment, a large number of contaminants is present in the indoor air of varying nature and sources. Contaminants can be chemical (e.g., volatile organic compounds), biological (e.g., airborne viruses) or physical (e.g., airborne particles). The way people interact or react to the presence of some of these contaminants is another complex issue. This interaction between people and the indoor air can be classified into two categories: the way people perceive the indoor