For me, the scariest part of COPD is the thought of catching pneumonia again. After initially being in ICU for a week with mycobacterial pneumonia, and a year of antibiotics, I caught pneumonia again two years later. It wasn't mycobacterial this time, thank heavens. Another 3 days in the hospital. Every time I cough out mucus from my lungs, I have anxiety that it will contain blood and I will end up back in the hospital yet again. I just had CT Scan, PFT test, Bloodwork, EKG, and urine analysis done. The CT Scan showed areas of inflammation and possible infection. Yech! I gave a sputum sample to my doctor this past Monday and so far tests are negative. It will be a little while longer for petri dish growth to show up or not. It gets real old getting sick with COPD. If not caught right away and treated, it could end your life, and I am not ready to go yet! That is my biggest fear. Take care all and God Bless!