The neighbors just stopped by... turns out we had a skunk in the backyard. Their A/C was sucking the smell into their house. Well, it turns out we had a dead skunk... really dead. Other than the 'faint' skunk odor, you really could not tell it was a skunk. The whole thing was just a mass of maggots. It was really really dead. The whole thing stank of decay and rotting. The skunk odor is mild compared to that. I managed to shovel the thing into a bag in a bag. Afterwards, I hosed the whole area down, but with the constant rain we've had today, it was a fruitless gesture.
Now that I've exposed myself to the smell up close, I can really smell it. I could not really smell it before, but now, it seems to be all I can smell. I think it may be soaked into my cloths and hair and such. Time for a costume change, a shower, and a haircut.
If this keeps happening, I'll need a dead maggot covered skunk userpic. Someone might be poisoning skunks nearby, this is the second one we found in our yard.