Abstract
Indoor sources, such as human bioeffluents, tobacco smoke and building interior materials, have been implicated as air pollution sources in built environment including car compartment. For assessing perceived air quality polluted by bioeffluents, the author had used occupants as judges. In spite of relatively high CO2 concentration, the occupants did not complain for the indoor air quality. Lower value of odor intensity voted by the occupants could have been caused by olfactory fatigue. Therefore the author tried to assess the indoor air quality by using visitor’s sensation. Then the assessing system for perceived air quality by using olfactometer was developed.