Need Some Cash? Sniff Some Poop

Purdue University students are making some extra cash through a project that might turn some of their classmates’ stomachs — by sniffing livestock excrement. Students earn $30 per session as they take whiffs of a variety of smells collected from barns filled with hogs, cows and chickens for odor research being conducted by Albert Heber, a Purdue professor of agricultural and biological engineering.

They sniff diluted samples of air that are taken from different locations on farms and diluted to represent the odors that air would have at various distances from the barn. Heber said the idea is to test different odor-mitigation techniques to see how effective they are. The less diluted the sample needs to be for the odors to be undetectable, the better the method works.

“If it has to be diluted 1,000 times, that’s a pretty strong odor,” Heber said. “We have had samples in the past that have been over 10,000.”

The information can be used to decide how close a residence can be to a livestock operation and not be affected by the smells. Heber’s paid sniffers said the job isn’t as bad as it sounds. “It gets a little intense, but since I go out and collect a lot of the samples, it’s not that bad,” said Sam Hanni, a research assistant for Heber.

Luca Magnani, a doctoral student in animal science, said “Grad students are kind of poor. I’ve done worse than this.”

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