Wisconsin based Century Foods International, a division of Hormel Foods Corp., filed suit Monday agaisnt its newest neighbor, an ethanol plant. Century Foods claims the plant’s odors would taint the dairy-based muscle-building powders, weight-loss powders and milk powders it produces.

A key part of Century Foods’ manufacturing process involves allowing air in the plant through roof vents to ensure the powders dry properly and are consistent. Ethanol plant emissions “are highly aromatic and soluble in milk products,” the suit said.

Ethanol plants turn bushels of corn into the fuel additive that is later blended with gasoline. In the process, they emit pollution-causing chemicals and compounds and a smell that supporters liken to popcorn but critics compare to manure.