Various studies have been carried out on the aphrodisiac properties of plants, for example, an American Psychosomatic Society (1998) report said, in studies, certain scents were found to change the blood flow to the genital area in women and men. For men, the bizarre combination of liquorice and donut scent increased blood flow to the penis by 32%. Not as dramatic as the combined smell of lavender and pumpkin found to increase the flow of blood to the penis by up to 40%.










