This is likely smokers leukoplakia. Very common, seldom converts to malignancy. It only converts to low grade dysplasia, (still not way risky) in about 25% of all cases. I am not going to preach to you about the long term consequences of being a smoker. Perhaps this is just a get your attention kind of thing, to make you consider giving up tobacco.

Brian, stage 4 oral cancer survivor. OCF Founder and Director. The first responsibility of a leader is to define reality. The last is to say thank you. In between, the leader is a servant.