I really don't know. I am not a health care professional anyway. It could be a detox symptom from not smoking...but that is a long shot. I would say that this is a good time to go to a doctor and get a diagnosis. Then bring your diagnosis to curezone and see what happens. It may be nothing. Laryngitis can come on by itself, especially with a smoker, but espeically since you smoke, this is not something you should mess around with. If your instincts tell you you are worried, then honor them and see a doctor. I believe strongly in taking respnsbilty for yourself and being your own doctor, and the very first rule in that sceanairo is to know/recognize when you are in over your head and need help!
In the meantime, get a holistic reference book and start looking up laryngitis and learning about it. Google it on the internet...see what you find. Things like: Diseases of the larynx...or causes of laryngitis....searches like that. Even if you see a doctor, knowledge is power!