If you are having bad cravings you can try this thing out
http://www.secrette.com/product_info.htm
its essentially a nicotine inhaler, similar to the function of a patch, but works faster as it is absorbed directly into your blood through your lungs
Nicotine is not actually dangerous to the body, not in small doses anyways. It is addictive (obviously) though.
But hey...if your craving a smoke, its WAAAY better to inhale just the nicotine and get the relief then to have a cig and get all the tar and sh!t that comes with it
Good luck on getting smoke free...