Smell Dating, described as the "first mail odor dating service" on its website, is matching potential couples strictly by scent.

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, then return the shirt in a prepaid envelope.

"We then receive all the T-shirts. We cut them up into pieces and what you get back is other people's shirts. We send each participant a series of these pieces. You smell each one and you let us know which ones you like and then if someone else likes you too, we exchange contact information for you guys, with a phone number," co-creator Sam Lavigne told ABC News.

For now, the pool of participants is limited to 100 New York City residents.