Dating Sites and Smell

In Discovery. An approach that makes sense, but without a practical aroma interface, difficult to implement:

" ... Two companies, Basisnote and Scientific Match, are developing technology to match couples based on the genetic components of the human immune system -- and their odor.

Studies have linked odor to immune systems and shown that people are most likely to be attracted to the smells of those who have different histocompatibility genes than their own. While those who have similar immune systems tend to not be attracted to each others' odors ... "