Abstract
Odor emission from a large gas separation plant in Songkhla, Thailand, has been claimed by local residents to disturb their health and to have adverse effects on their Zebra doves, which are reared for cooing competition and commerce, although there is no proof that odor emission is the real cause. This study was designed to verify if any association exists among odor perception, human health symptoms, and Zebra dove behaviors. Data were collected from daily reports of three resident groups including odor perception (n = 40), human health symptoms (n = 40), and Zebra dove behaviors (n = 39). Enrolled subjects comprised residents of location-matched triplets comprising one individual of each group. Mixed-effects random-intercept regression analyses among these measures over time (90 days) within triplet showed that lag 0–lag 3 gas odor was significantly positively associated with reported atypical Zebra dove behaviors (OR range: 1.84–3.85). On the other hand, oil, rotting food, and sulfide odor were significantly associated with reported human health symptoms (OR range: 1.83–13.80). The claims of adverse effect of gas odor on the health and behavior of residents’ doves and that of oil odor on human health are supported, although, evidence is lacking on the definitive sources of these odors.
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