To make a long story short, some yuppie couple sued their farmer neighbor because his early work schedule was disturbing their Saturday slumber. That was nothing, however, compared to the aroma of fresh manure in the springtime, since the yups' abode was downwind of the farm.
In my in-laws county, they mail prospective homebuyers a scratch and sniff manure card. Basically it says, "this is what your new home will smell like. If you don't like it, buy somewhere else."