More than 50 percent more. Women’s are simply more dense. And given the way olfactory bulbs process signals, density might have a large effect on overall function. The density, and thereby strength, of any given signal is enhanced. The ripples spread faster over the pond. And given that women have the same number of odor receptors as men do, the primary site for how women’s olfactory system differs from men’s might be here in the bulbs. Given how primitive olfactory bulbs are, this difference may be present from birth.
