AMEN! I have lung cancer and pulmonary fibrosis - even though I look healthy - and it would be extremely dangerous for me to catch any respiratory disease! I wear a N95 mask when I go out in public but it is very difficult for me to breathe through it.
I always ask my medical people (and my hairdresser) to wear a mask. I submitted a formal complaint after I went to local ED/Urgent Care for a Covid test over the weekend last January. I told them I was there for a test because I had symptoms, they had me sitting in the waiting room with everybody else. I got called right away for triage because my oxygen levels drop with exertion and the nurse wasn't wearing a mask. He knows I am there for a Covid test and he is not wearing a mask!!!! Then they have me wait back in the waiting room with everyone else! What idiots.

And not just Covid but also flu can kill you if you have lung problems! In Feb a family member had lung cancer, caught the flu and immediately died.