Eric
You can't smell anything from a pellet stove, they are sealed. The chimney carries all of the smoke away above the top of the house. However I collected the DDD by hand from large piles in my neighbors yard and I dried them in the oven at 250 for half an hour in order to get the testing done and the odor from the oven that escaped the range hood smelled quite sweet, almost like Rhubarb cooking.
It would appear that pelletised ungulate dung, like dear, llama, elk or moose is feasable. I suppose buffalo chips would need to be pulverised first so they would feed into the hopper correctly.
All in the name of science.
Jim