They can be operated with little smoke. However, they usually are not operated that way. Too often green wood is put in them, causing smoke, and too often, too much wood is piled in, causing too much heat, and then the damper closes. This causes the wood to smoulder thus smoke and stink. Can't blame the neighbors, but I expect most of the problem is the neighbors jealous of someone saving money and working extra hard to do it.
One of the commandments is something to the effect, that thou shall not covet thy neighbor. Often that is the root of a lot of problems. We don't want the neighbor to have more than we have. /forums/images/graemlins/tongue.gif How did I get off on this rant. /forums/images/graemlins/tongue.gif /forums/images/graemlins/wink.gif Sorry.