... A. , Tanaka,M., Yoshimura, T., Chikara, H., Takigawa, T.,Morimoto, K., Nakayama, K. and Shibata, E. (2009)Regional differences in residential environmenets and the association of dwellings and ... upper airway sym ptoms was investigated and showed that skin dryness and rashes, pharyngealdryness, and nasal dryness and congestion are al-leviated by higher humidity, and steam humidifica-tion ... SO2 and particulate contam-ination, which damage human health. 52 )Domesticsources of SO2are associated with the use of coal and other fuels for heating and cooking. 52 )Biological PollutantsDander,...