As one who lives in the country and rides a motorcycle, I'll tell you that a freshly-manured field has one smell, and a freshly-sludged field has a different smell, and I prefer the former. But as one who lived for years in Philadelphia, I'll take either of the rural smells over that of the city ANY DAY!!
Farm manure may be potent at times but human waste is truly obnoxious. It is said that Woodstock stank of human waste for several years after that glorious festival.
They must have clapped often after every musical rendition!