What is the carbon footprint of a single person smoking a pack of cigarettes a day?

Actually, a lot of cities have banned you from even smoking outside. I know that cigarette s aren't good for the environment...they aren't biodegradable...I think that eventually cigarette smoking will no longer exist. I think right now our major concern should be the very angry group of people going through withdrawl because they are not allowed to smoke. I don't know about you, but I think the big cities should break up and place the bans one neighborhood at a time...having a huge city full of people quitting the habit at once is a terrifying thought!!