Oh Snap, people will do anything to save money!
The power of poo, that's right Cow dung can power a house for months. They are also trying to finds out if Cow farts are causing some of the greenhouse effects. I guess if this will save me from paying $200 bucks I can live with a shit smell, all the time, in very thing, ewww maybe not!! No poo power for me!!
But for some the Idea is too good to pass (Gas) up here is a diagram to prove the system and how it will not smell. (My Ass!!)