The vestibule of every Target store I've ever been in smells like popcorn and plastic. Today I walked into a bus station redolent of boredom and urine. I once had to wait in an airport for a long time. That stunk. When people says that something "smells" they mean it produces a foul smell, rather than it is "of odor." The part of the brain where one may gain access to memory is close to the place that deals with smells. There is limited room in the brain. "Picking your nose" rarely refers to preparations for plastic surgery. Dogs lick their noses in lieu of having a mucus membrane and in order to stay cool in the summer. Each dog has one nose. Getting an answer "on the nose" is the same as "hitting the nail on the head." The heads of nails do not have noses. Nails with heads: standard. Heads with nails: problematic. A man once gained a small amount of fame by hammering a nail into his head through a nostril. Not hitting the nail on the head may have led to him getting it "on the nose."