Those wacky germans.

[GonzoStyle]

BERLIN (Reuters) - Human sperm become excited when exposed to the scent of lily of the valley, doubling their speed and homing in on the aroma, a German scientist said on Wednesday.

Hans Hatt, a biology professor at Ruhr University in Bochum, said knowledge about a newly discovered odor receptor on the sperm's surface could enable researchers to devise alternative contraception methods or ways to boost fertility.

"This is the first time sperm has been shown to respond to smell," Hatt, who said the findings came after three years of study, told Reuters. "The application of the substances in a salve to the vaginal area could raise the chance of conceiving."

Only in germany could they spend three years wiping down vaginas with potpourri and come to the realization that cum not only smells but can smell.