When the adrenals are chronically overworked and straining to maintain high cortisol levels, they lose the capacity to produce DHEA in sufficient amounts. DHEA (the full name is dehydroepiandrosterone) is a precursor hormone to estrogen, progesterone, and testosterone, and is necessary to moderate the balance of hormones in your body. Insufficient DHEA contributes to fatigue, bone loss, loss of muscle mass, depression, aching joints, decreased sex drive, and impaired immune function.
DHEA is taken to HELP the testosterone in the body. The key is to get the womens body to produce the testosterone, and then to be able to USE the testosterone. The women needs to have a certain level of FREE testosterone in order to desire. Certain female hormones can actually LOCK up the testosterone in the body and make it useless. SO the DHEA is not what causes desire, it only helps the body to produce testosterone, which IS the chemical of desire.
As far as scents, do you mean like having scented candles all over the house and burning them. It's not helping now.