Yes, I grew up in farm country. I am aware of the various smells. Hog, chicken cow, veal, etc.The OP was referring to the current foul smell coming from the fields. They’re being spayed with liquified grossness from the lagoons at Iowa hog confinements. Feel free to come for a visit if you’d like to experience it firsthand.
The point is, the stuff being spread around this time of the year may be the very reason someone was in the field to find the body.