My next door neighbor has an open range pig farm. However, in the last few months he has penned in a wet muddy area about 300' northeast of our home. The prevailing winds are such that we now get objectionable smells regularly. I read an ag article suggesting that a hedgerow of close conifers could help absorb livestock odors and cause uplift and better air mixing. However, I don't want to spend the money and effort to plant 120' feet of trees if it doesn't make much difference. Thoughts?