Other Hive designs

I learned that this is a hot topic among bee keepers and that there is really not correct answer to which hive is better. I also learned that the Langstroth has a better chimney effect. That the top bar hive was Greek and first made in 1682. Finally the TBH makes less honey and it is harder for first time bee keepers but that it is cheaper and easy to make. What I want to know is why does the Top Bar Hive take less smoke.