I must admit that I don't know if they do respond in the same manner with smoke, however, they do respond in the same manner as honeybees do when sprayed with sugar syrup. I have several bumble bee hives as well as the honeybee hives, and could attempt to determine if they do. As all my bumblebee hives are set up as observation hives once the outer lid is opened, such observations are easy to determine. Using one as a control, I could experiment on another to determine the result. Just let me know if you'd like me to run the experiment. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::