Can you beat Chloe's nose? (DARPA wants to know)

This is Chloe. She's a dog. She's actually not my dog, but my co-worker's. Isn't she cute? Anyway, DARPA  wants to develop a nose just like hers, mucous membrane and all. The so-called "RealNose Effort" was opened to competition yesterday, and asks contractors to "build a 'nose' constructed from actual olfactory receptors that further leverages the components of the canine olfactory system to create a breakthrough detection system with potential capabilities beyond that of a canine". If you're interested, sign up at "RealNose Teaming site" hosted by SAIC. But somehow I doubt you'll ever beat Chloe.