They may not have incorporated sleek lines and brilliant form into their machine, but for two Cornell students the saying "whoever smelt it dealt it" can now be proven with some sharp science and some interesting design.
When learning in class how breathalysers work, Robert Clain and Miguel Salas assembled a fart detector from a sensitive hydrogen sulphide monitor, a thermometer and a microphone and wrote the software that would rate the emission in question.
For the 'Stench Seeker', there are three pillars of fart quality; stench, temperature and sound. The temperature is critical; the hotter the fart, the faster it spreads. Our heroes clearly thought this one through, as they built a fan in to get rid of the worst of the worst farts imaginable. The grading from 0 to 9, 9 being the stinkiest, determines if the fan will turn on and help move the stench along.
So for frequent 'flatulators', it's best to know that no matter how much you deny it, science can now tell who supplied it.
Mote
Resource: http://www.popsci.com/scitech/article/2009-08/there-scientific-way-measure-fart-smell
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