In 2012, Lucia Jacobs, an animal behaviorist at Berkeley, proposed that the size of the olfactory bulb, the neural structure that helps all animals smell, was less about "odorant discrimination and acuity" and more about navigation. Her paper, published in the Proceedings of the National Academy of Sciences, suggested that this reasoning explained why there was a pattern in the scale of olfactory bulb sizes in animals, even those that relied more on their eyes than their noses to survive.
— Read more at Your sense of direction is intrinsically linked to your sense of smell at MNN.
So if one has a ridiculously poor sense of direction, what does that say about one’s powers of olfaction?
Er, asking for a friend.
I hope nothing…I do not have a good sense of direction! Having navigational apps on my phone has changed my life.