It's a nice thought, but unfortunately, futile.
Although this game does have the distinct tang of do-gooders, I thought that it was quite an enjoyable little game that gave a very valid message.
However, the animation was a little inelegant, and the walking was far too slow to be taken seriously. I also doubt that simply playing a beat-em-up game online would actually change anyone's minds about smoking. If I was a smoker, I highly doubt that a game would change my mind on smoking where medical advice, health warnings and gory pictures of tobbacco infected lungs on the packets failed.
It's a nice thought, and I applaud you for trying, but unfortunately, it's a drop in the ocean that will sadly make little impact.
However, because I agree with your statement, and enjoyed the game, I'm going to give you eight stars.