A mosquito can detect the carbon dioxide emanating from a prospective meal from hundreds of feet away. The Kite Patch, a small, non-toxic sticker that you place on your clothing, can jam a mosquito's CO2 radar. Wear one, the patch's creators say, and you'll be effectively invisible to the bloodsuckers for up to 48 hours.
The Kite Patch was developed by Grey Frandsen, Michelle Brown and Torrey Tayanaka of Olfactor Laboratories and, according to the FAQ page at the patch's website, is based on the findings of researcher Anandasankar Ray and his colleagues at University of California Riverside. If we had to guess, we'd say the FAQ are referring to this study, published by Ray and his team in a June 2011 issue of Nature, in which the researchers identify three groups of chemicals that can disrupt a mosquito's carbon dioxide receptors. We wrote about the discovery at the time, and here's the upshot: