In a landmark study in PLOS ONE, women were found to have as many as 50 per cent more olfactory bulbs, i.e., neurons capable of detecting smells, in their brains than do men. This increased biological hardware enables women to have a significantly higher level of sensitivity to complex environmental odours, subtle changes in the chemical composition of their environment, and to various pheromone signals that men are unable to detect.

PC: Google Gemini