A universal truth that keeps popping up in my search of the literature is that nothing is as simple as it seems. A sniff seems just a simple movement of air, but it’s actually way more than that: it’s a psychomotor event. One crucial function is to synchronize the olfactory receptor cells with the olfactory bulb and other smell-related brain regions, especially the primary olfactory processing center, the piriform cortex. This allows different regions to communicate with each other…