住宅における空気環境と居住者の換気行動についての実態調査第2報：北陸地域と関西地域の住宅を対象とした居間の臭気環境および居住者の臭気環境改善行動の実態

摘要

In a highly airtight house, it is well known that air pollutants remain if periodic ventilation is not performed. The use of deodorizers and air cleaners is increasing now, as residents are showing a greater interest in eliminating offensive household odors. We conducted a questionnaire survey about the detection of household odors and conducted ventilation experiments with residents in the Hokuriku and Kansai areas. More than 80% of the respondents detected odors in the living room, with 30% indicating that they were unpleasant. The most common odors detected in the living room, as indicated by 50% of the respondents, were cooking odors. The smell of mold, garbage, and cigarette smoke were rated as less intense than cooking smells, but were still regarded as being strong and unpleasant by residents. The degree of intensity of odors detected in the living room depends on the distance between the living room and the source of the odors. Opening windows was the most effective way of eliminating odors, followed by turning on the ventilation fan. Cleaning the range hood frequently was also found to be an effective way of preventing the diffusion and penetration of odors.%省エネルギー基準（以下，省エネ基準）の制定後，住宅の断熱・気密性能が向上したが，計画換気が伴わず空気汚染物質が室内にこもりやすい状況となった．1990年代以降，シックハウス問題を契機に居住者の空気環境や臭気注1）環境に対する意識が高まり，改正建築基準法では機械換気の導入が義務付けられ，計画換気の必要性が見直されている．