This could be the last hit, the last puff because they are killing you.
You may think that oh it's only a little smoke one hit! But from that one puff you get addicted to because of all the chemicals that are added. Smoking has a huge strain on your teeth, and after years of smoking they have a strain on your teeth. Thats not the only strain on your body, it turns your skin yellow and destroys the elastic fibers in your skin. The effects to your body don't stop there, it also causes cell damage that weakens your immune system. Worst of all after long term smoking causes lung cancer, not just something that will go away like a cold it harms you for life.