During a few days of every year,

the grounds of certain rural agricultural lands

are fertilized with pig manure which, in turn,

fills the air with an ungodly stench

but to which swarms of flies are drawn.

 

The shit is cheap because

there's no shortage of demand for pork

and the pigs are cheap because they can subsist

on damn near anything organic,

 

including their own shit (now there's an example of the circle of life)

to (from what I hear) human beings.

 

But, this is all falls within the bounds of normality

and, really, people easily become acclimated to such conditions,

losing all ability to smell the shit.