I've been smoking Dunhill Blue for about 7 years, I can consider myself addicted to cigs, I start my day off with a cup of coffee and a ciggarette always.
I do not recommend you to start smoking if you didn't up until this point, it's just a bad vice and your health is at stake.
CoD series feels like an endless storyline, developers always come up with a new story that links up 3, 4 sometimes 5 CoD games, I've enjoyed every single one of them.