That's great! I think it was beneficial it was only second hand smoke because you only got midly high and became so carefree. I believe that, because I was a regular smoker, I would smoke more than what was needed for a buzz and became too introspective/self concious about it, thus worsening my stutter. That's the key in my opinion, when you can get to a state of mind where you simply don't care about your stutter, everything becomes easier and with much more flow.