Are you certain the farmer was spreading his manure and not some cow's manure? Btw, "raw sewage" and "manure" are not the same thing. Either way, it won't smell very pleasant during the initial application, but this is what we in the biz like to call "nutrient cycling", and it is important, especially in the Spring to help the plants grow. Growing plants, in turn, feed animals and people. The better the nutrients, the more food there is produced.

Those tomatoes you love don't grow themselves, you know! It took a bit of shit to help put them on your table.