I feel a little stupid and a little uninformed. Do most people who have germs colonized in the lungs also have the same in their sinuses? Did your clinic automatically culture your sinuses, or just when you had symptoms (infections)? No one ever told us CF'ers should be careful to stay away from their own junk they cough up, the garbage, etc. I guess that was a no brainer, but feeling like I don't have one right now. No sinus infections - just concerned about the possibility... or probability. Thanks.