capn, make sure there aren't any sparks flying out of it.
there is an 'art' to using the smoker.....less is better UNLESS the bees are very aggressive, and you absolutely need some manipulation or movement of the hive. in many circumstances, when they are snarky, just close it up and go back another day. many factors will contribute to a cranky hive, but one being too much poking around will definitely make them cranky and set them back every time you open the hive.
if you are sending bees in the air, and there is a really high buzz you have over smoked them and they are agitated. you don't need much if your bees are gentle. maybe a puff across the entrance. lift the outer cover, maybe a puff through the inner hole cover, or lift it, and a gentle puff across the tops of the frames, wait. then open.
here is a key to manipulate frames with a smoker; (my method) you don't need to smoke the entire tops of the frames or smoke the bees down, just send a puff across each end of the first frame you want to lift, the bees move. lift it. for each frame you want to lift, do the same if need be, just a gentle puff of smoke at the ends of the frames . that's it.