Sean Carroll in Preposterous Universe:
We gather empirical evidence about the nature of the world through our senses, and use that evidence to construct an image of the world in our minds. But not all senses are created equal; in practice, we tend to privilege vision, with hearing perhaps a close second. Ann-Sophie Barwich wants to argue that we should take smell more seriously, and that doing so will give us new insights into how the brain works. As a working philosopher and neuroscientist, she shares a wealth of fascinating information about how smell works, how it shapes the way we think, and what it all means for questions of free will and rationality.
More here.