Pheromones are primarily perceived through olfactory sensors, and studies suggest they are excreted by several areas of the body, including the skin, sweat glands, saliva, and urine.
Pheromones are linked to some of the most crucial stages in our lives ... from breast feeding to mate selection. Studies have shown, for example, that breast-fed newborns are able to distinguish between a breast pad worn by its mother and one worn by a stranger. In a crib, the baby will turn quickly away from the unfamiliar breast pad ... and turn towards his mother's.1