1. FLATUS ODOR JUDGE
Odor judges are com-mon in the research labs of mouthwash companies, where the halitosis-inflicted blow great gusts of breath in their faces to test product efficacy. But Minneapolis gastroenterologist Michael Levitt recently took the job to another level—or, rather, to the other end. Levitt paid two brave souls to indulge repeatedly in the odors of other people's farts. (Levitt refuses to divulge the remuneration, but it would seem safe to characterize it thusly: Not enough.) Sixteen healthy subjects volunteered to eat pinto beans and insert small plastic collection tubes into their anuses (worst-job runners-up, to be sure). After each "episode of flatulence," Levitt syringed the gas into a discrete container, rigorously maintaining fart integrity. The odor judges then sat down with at least 100 samples, opened the caps one at a time, and inhaled robustly. As their faces writhed in agony, they rated just how noxious the smell was. The samples were also chemically analyzed, and—eureka!—Levitt determined definitively the most malodorous component of the human flatus: hydrogen sulfide.
Levitt defends his work against the reflexively dismissive by noting that doctors have never studied flatulence and that smell is a potentially critical medical symptom: "The odors of feces and intestinal gas and breath could all be important markers of gastrointestinal health," he says. Hydrogen sulfide, for instance, is an extremely toxic gas to mammals, potentially playing a role in ulcerative colitis, among other diseases. And so Levitt has dedicated his career to the study of the myriad fragrances produced by the human gut and imprudently ignored by the medical establishment.
2. DYSENTERY STOOL-SAMPLE ANALYZER
In the early '80s, Virginia Tech profs Tracy Wilkins and David Lyerly studied the diarrhea-causing microbe Clostridium difficile in sample after sample after sample of loose stool from the disease's victims. They became such crack dysentery docs that they launched a company, Techlab, dedicated to making stool-analysis kits. Today, Techlab employs 40 people, 19 of whom spend their working hours opening sloppy stool canisters and analyzing their contents in order to test the effectiveness of the company's kits. You'd have to have a pretty good sense of humor, right? Well, fortunately, they do. The Techlab Web site sells T-shirts with cartoons on the front (two flies hover over two blobs of dung; one says to the other, "Pardon me, is this stool taken?") and the company motto on the back: "Techlab: #1 in the #2 Business!"
3. BARNYARD MASTURBATOR
Researchers who want animal sperm —to study fertility or for artificial insemination—have a suite of attractive options: They can ram an electric probe up an animal's rectum, shove an artificial vagina onto the animal's penis, or simply do it the old-fashioned way—manual stimulation. The first option, electroejaculation, uses a priapic rectal probe to send electricity pulsing through the animal's nether regions. "All the normal excitatory signals that stimulate ejaculation, like touch, sight, sound and smell, can be replaced with the current from the probe," says Trish Berger, professor of animal science at the University of California, Davis. "It's fascinating. Of course, this is a woman talking."
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http://www.popsci.com/popsci/science/article/0,12543,484153,00.html