Pigs

 These are bagpipes. I understand the inventor of the bagpipes was inspired when he saw a man carrying an indignant, asthmatic pig under his arm. Unfortunately, the man-made sound never equalled the purity of the sound achieved by the pig.

~ Alfred Hitchcock

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When you grow up in Iowa, you become accustomed to seeing things that represent the culture and livelihoods that keep the state running.  I pride myself on being able to distinguish the smells of pigs, cows, and chickens.  They're really quite different.  To the unsophisticated nose, though, they just all smell bad.

Trust me, just like with man, there are different degrees of badness with man-ure.  Often the level of badness has to do with proximity.  Or quantity.  As I said, just like with people.