The innovative site markets itself as the "first mail odor dating service". Yes, you send them your sweat in the mail. So they can help you fall in love. Of course, this rather quirky initiative started and is currently based in America. For $25, men and women can sign up and receive a white T-shirt in the mail. They wear that shirt for three days and three nights without deodorants and other scents, and then return the shirt in a prepaid envelope.