John- Check this chart out it might help you find a preliminary answer. There is a lung cancer meme that says that if you have a lung, you can get lung cancer. If you smoke you have a better chance. But not everyone gets cancer.

For how long did you smoke? Did you quit 10 years ago?

Nobody can tell you what your chances are. What I can tell you is that literature I was given by the doctor when they first spotted something going on in my lungs stated that most often these nodules were benign. Mine wasn't but it was from breast cancer, not my smoking. I'd like to say your chances are pretty good with 1- 9mm nodule that even if it were it should be highly treatable, but I'm not a doctor. I had a co-worker who passed in her early 30's from lung cancer and didn't smoke a day in her life, nor did her husband. Sometimes things just happen, and sometimes they don't. I wish you well and try to relax. At least you are looking into it. I wasted months of worry when I should have been getting checked out.

From my experience with multiple nodules I understand they look at size and appearance to determine if they wait or act.
While you may likely hear the same thing from another medical professional, a second opinion never hurts.
The way my oncologist explained my nodules is more like a marathon than a sprint. I’ve been able to accept this knowing they are watching closely and when one of my nodules did change, they acted very quickly to educate me of all options for treatment.
Best wishes for no changes in those nodules.