If you have Tree of Heaven (a non-native invasive tree that gets around), it sticks when cut. In fact it's nickname is "stinking sumac". Look up pictures and see if that is your plant.

I had a massive siberian elm cut down in my front yard in fall 2008. Trunk was 5 feet across. I had the stump ground out. Filled the hole with soil, and grass is planted there now.

All season 2009 and 2010, I've had that poo smell in 2 very specific spots at the perimeter of the stump. It's not the whole perimeter that smells, just those 2 isolated spots. We'll see what happens in 2011.

One of the smelly spots, there is a little wood visible at the surface, and that piece of wood weeps all year. You can smell it 5 feet away...easy.

People/visitors and my kid comment on the smell. It's strong. It is the smell of poo...exactly the smell. It's definitely the tree.

Gayle

I also have an oak that looks to be weeping with yellow jckets quite fond of the sap (At least i think its sap?)…not sure what it is but it is isolated in that spot and has a distinct baby poo smell.