What would cause a nagging smoky taste in a non-smoker?

What do you mean? Do you mean why do nonsmokers nag for a smoke taste? No, I mean what I said--I sometimes get a smoky taste in my mouth...and I don't smoke.

I've checked out blogs, and the closest I could come was people who "smell smoke," when there isn't any, could have sinus problems. My issue is a smoky taste.