our sense of smell is because we have a depletion of the mineral zinc,
however essential oils can be very healing as well -they unlock many things in the brain, I use them rose, lavender, and orange, etc. quite a bit


http://home.iprimus.com.au/rboon/EssentialOils.htm

The Olfactory System

The olfactory system is one of the first nerve systems to develop completely in the human being. During the seventh week of gestation, the embryo develops remarkably. It is during this period of growth that the telencephalon (the most forward part of the embryonic brain) develops the olfactory lobes which ultimately produce the riencephalon (the limbic lobes which process our olfactory sense). The riencephalon is the oldest part of the brain phylogenetically, and is that part of the brain that is the seat of our emotional selves. Thus we can see the intimate connections between the olfactory system and our emotions.