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PHILADELPHIA (CBS) – Single men may want to take note. According to new research, women can tell if a man is single by using their nose.

A new study by Frontiers in Psychology, a peer-reviewed academic journal, says that single men smell more.

The study had women rate single men’s T-shirts and men with partners’ shirts, and the results showed that the single men’s shirts were smellier.

Americans Take Pain Of Girls Less Seriously Than That Of Boys, Study Finds

Previous research found that male testosterone levels drop when they’re in a relationship.

Testosterone levels are linked to stronger body odor.