The purpose of this study is to investigate the indoor air quality by making subjective assessment of perceived air pollution caused by human bioeffluents. One hundred and seven subjects were used as panel to report the odor intensities and acceptability of bioeffluents from fifty-four other subjects as occupants. It was found that 20% of judges described dissatisfaction caused by bioeffluents at 1.5 on the Yaglou's odor intensity scale. A ventilation rate around 7 liters per second per person was required to satisfy 80% of judges entering the chamber. In addition, the relationship between the ventilation rate per olf and the percentage of dissatisfied judges for Japanese subjects was investigated.
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IWASHITA et al. (1990) studied this question.