I can't tell for sure. I'm sure that smoky looking stuff isn't supposed to keep flowing out right? I can barely smell it now but it's still running. The temp is well above zero so it may have just finished a defrost cycle (I wish I knew the darn timing for those-I always panic that something is wrong with it when it's actually defrosting). I just know when dh comes home he won't be able to smell it. They've been picking corn all afternoon so his nose will be full of dust or something...