After a few weeks from being started, the compost has heated up nicely. We usually turn the compost about now to make sure the outer layers are turned inwards towards the middle of the compost pile. It will take a little less time for the pile to reheat and start decomposing again. I enjoy walking outside on a cool Fall morning and seeing the steam rising off of the pile. There's always a nice earthy aroma coming from the compost bin. It shoulld never smell any other way. If the pile does smell "off", then you'll need to find out what is wrong and correct it. Gnats in the compost pile are a sign that the compost pile is too wet.