I agree with Alex. In discussion with my consultant, the distinct impression I have is that unless your CML is such that your immune system is compromised (which is not likely if you are successfully being treated with a TKI or in treatment free remission like me), your risk is the same as the general population. I can understand why leukaemia and lymphoma per se are listed but I expect that means in practice patients who have compromised immunity as a result of their disease.
Like Alex I am cautious but as far as I am concerned, no more frankly than I would be otherwise. I keep my distance, wear a mask inside public places and wash my hands regularly. It's completely understandable for others to take a more careful and protective approach if they feel more comfortable with that.
Richard