The advent of environmentally controlled animal housing has had many helpful repercussions in improving livestock yields. However, this system also has drawbacks, particularly regarding the indoor air environment of the housing area. Confinement livestock buildings have shown potential for dramatically increased concentrations of dust particles, odour, and gases. Furthermore, worker satisfaction and performance are affected by dusty and odorous work environments. Although the characterization of dust and the pathology of the health problems caused by air quality in swine building airspaces are unclear, there is little argument that dust, at typical concentrations, has an adverse effect on the health and comfort of animals and humans. Different dust control methodologies have been researched world-wide. In this study a canola sprinkling program was implemented in an attempt to reduce airborne particles and determine the effect this reduction in airborne particles would have on human subjects. It was the objectives of this study to determine if (1) air quality control strategies an be directly evaluated measuring responses of human subjects, and if (2) improved air quality can alter the human response in swine building environments. In this study 20 human subjects naA?ve to hog barn confinement facilities, were exposed to two different hog confinement building air environments. The control group experienced a typical animal housing air environment, whereas the treatment group experienced an animal housing environment sprinkled with canola oil. Measurements were taken on the environment in each room for each study day and the human response attributes measured were Forced Expiratory Volume in one second (FEV1), Forced Vital Capacity (FVC), white blood count (WBC), methacholine challenge (MC) and nasal cell counts (NL). The results of this experiment indicate that human responses can be used to evaluate air quality conditions within animal housing environments.