Very cool! REALLY made me want to have a cigarette.
The last shot was killer.
Gorgeous, but I'm not really sure what you are trying to say. Maybe you're not, and these are just gorgeous shots of smoke.
My only other critique might be length...I was wondering about halfway through if it was just going to be more shots of smoke. I understand 3 minutes isn't very long, but remember: with any kind of bold artistic or experimental statement, it always helps to remove everything but what is absolutely essential. Always ask yourself if there is anything you can remove and still make the same statement.