Controlled residential experiment reveals reduced chemical emissions suppress symptoms in residents, indicating everyday activities dynamically alter indoor air quality.
This study conducted a residential stay-based experiment to examine the health effects of improved indoor air quality. A four-day, three-night experiment was carried out in two experimental houses, one designed with low-emission building materials. Forty participants took part, and VOCs were measured using passive samplers, while TVOC concentrations were continuously monitored. Questionnaires, biometric data, and activity records were collected to examine links between daily activities and air quality fluctuations. Results showed that reduced building-derived chemical concentrations suppressed symptom onset and that air quality varied dynamically with daily activities, highlighting the importance of continuous air quality monitoring beyond environmental design.
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Nakayama et al. (2026) studied this question.
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