What type of male sweat turns women on?

A Rice University study used male sweat collected from normal work days, workout sweat and sweat generated from sexual activity.

...

Chen and her colleagues then devised settings in which female participants were exposed to different sweat "scents" while being monitored by brain-scanning, magnetic resonance imaging equipment. The women didn't know what they were smelling and couldn't differentiate among the various types of sweats.

But their brains could.

"The sexual sweat lit up different regions of their brains," Chen said.

She said the work suggests the brain can recognize an emotional component in sexual sweat, somehow differentiating it from normal sweat.

...

It does not say how you explain to your date how you worked up the sexual sweat to begin with, but I suggest you tell them you were just thinking of them.