Want to see and smell something sick? Many farms around here are putting biosolids on their fields instead of fertilizer. The cows eat the grass-you eat the beef and drink the milk--you get the idea. The biosolids are human waste coming from the big cities such as New York. You can smell it for miles.....
In Germany, they used to pump all of their sewage onto their gardens and fields. The whole place constantly smelled like the bottom half of a septic tank. I don't know if this is still a common practice or not.