Harold McGee’s Nose Dive: A Field Guide to the World’s Smells is an ambitious and enormous work. Indeed it’s so large, at 654 pages and weighing nearly a kilo, that I could only manage to read it at the kitchen table — which made me appreciate its wipe-clean binding. Its distinctive new-book smell (there is such a thing) contrasts mightily with the musty, familiar old-book scent of my study.