Okay here's one that may get a laugh or at least a few interesting responses.

As I've written in other posts, I'm in the process of buying a farm (not 'buying the farm'). We are going to build a barn and I was wondering if there might be a species of tree that we could plant between the barn and the house that would not only obstruct the view (at least partially) but would also actually absorb some of the aromas generated by the animals in and around the barn. I plan to keep the barn area clean but when things get out of hand it would be nice to have a natural odor eater as a back-up system.
If not absorbing the odor perhaps a scented tree that has a pleasant aroma? Like cedar?
Any ideas?
--Jeb