Does smoking cause you roof of your mouth to hurt?

Not usually: if you have a torus mandibularis ( a bump on the roof of your mouth which is a bony deformity) that can get irritated and inflamed by cigarettes smoke. You need to see your doctor for an examination, especially since long-term tobacco smokers can get oral cancer. The single best thing you can now do for your health is to talk to your doctor about ways to quit tobacco smoking.