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United States Environmental Protection Agency
Ag 101
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Other Airborne Emissions

Particulate emissions from AFOs include dried manure, feed, epithelial cells, hair, and feathers. This airborne "organic dust" can include endotoxins (the toxic protoplasm liberated when a microorganism dies and disintegrates), adsorbed gases, and possibly steroids. The main impact downwind appears to be respiratory irritation due to the inhalation of organic dusts.

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