An American dating agency claim that they have disclosed the secret of sexual attraction and that they have found an ideal criteria – odor of the body. People are attracted by parters whose odor differs considerably from their own and whose immune system is completely different.

According to the owners of the company, love is just a matter of chemistry. The dating site offers the visitors to send a sample of DNA - a tampon soaked with saliva – and then examines it in order to find an ideal partner, according to The Daily Telegraph.

The company says that they guarantee that the found partner will be "a person whose odor you like, with whom you will have healthy children and maximum satisfactory sex life. They claim to be "the only company who fins partners basing on the newest achievements of physical chemistry.

This method is effective because the DNA analysis allows the researchers to find partners that have compatible genes of DNA, i.e people with different immune systems who can give birth to a child with very strong immune system.

The fact is that we like the odor of people who have the immune system that differs much from ours. Their odor seems sexy to us, according to the dating agency.

The clients are also asked some questions about their values, so that the agency could find a partner that shares their client's values and beliefs.

Now this service is available only in Boston where about 39 % of people are single.