Hello...not sure if they're technically "plugs" but I cough mucus up daily. When it is greenish and has an odor it is most always another lung infection leading 100% of the time to yet another exacerbation. Try and drink lots of water, pineapple juice, Mucinex or generic of same. I also use a machine called the Airvo 2 which is a non invasive intubator. It takes all of that on the daily to keep me from choking on the nasty stuff. I'm 72 and on oxy most days 24/7 but do still manage to get out and about even trying to get at least twice weekly. Exercise is a must to prolong quality of life or just "life" for that matter. Emphysema is one nasty evil disease which in the end always wins. All we can do is try and stay positive and do the best we can in the here and now.