Bourgeonal is an aromatic aldehyde used in perfumery with a fragrance resembling that of the Lily of the Valley.聽 What鈥檚 so special about this fragrance? It is secreted by the ovum within the female genital tract as a chemo-attractant allowing sperm to locate the egg more quickly. In vitro studies have actually shown that bourgeonal odour causes sperm to swim twice as fast! That鈥檚 not all! In 2010, a Swedish study showed that bourgeonal is the only known odour substance to which males have a higher average sensitivity than females. Scientists believe that males express the same olfactory receptors in sperm cells as in the tissues of the nose. For those females seeking a partner, perhaps it may be wise to sprinkle on a bit of bourgeonal.