Music activates numerous neural circuits throughout the brain and body, including the olfactory system.

“listening to music activates so many circuits throughout the brain and body that really one can take a step back from the scientific literature on this and say anytime someone has done a study where human beings listen to music and people record from a particular brain area believe it or not even from the olfactory system from the system and the brain responsible for smell there seems to be some significant shift in terms of the neural firing there or the release of neural chemicals”