Oh how I wish I could talk with you in person—I am a retired nurse. I’ve cared for my fair share of COPD patients over the years I completely understand you. Are you checking his oxygen sats, daily & when he is “honking” ? COPD patients are normally low on oxygen — supplemental oxygen is not helpful because their bodies depend on the CO2 drive to breathe. THIS makes them cranky, irritable & often irrational . Sadly , it gets worse as the disease progresses. If you can get someone in to help or be with him, I highly encourage you to have “me” time. Get out , walk around, visit friends & family. Build up an in-person support network. Go to Church, see a funny movie— you must take care of you — that is not selfish it is survival Folks with long term illnesses are frightened. He might not say so but being obsessed with sputum color tells me that he is. My Dad was a bit cranky & so was my Mom… they both had COPD & heart disease.