It won't happen, not in our lifetimes, but if anyone eventually develops a cure for COPD they'd be billionaires within weeks. It's a huge killer worldwide, particularly in the wealthy developed world where individuals are prepared to sell their soul for hope.
There are so many cure scams ready to take your money. One says he's cured his old dying mum of COPD by diet, just send him a kings ransome & he'll tell you how. It's rubbish ..... why isn't he rich & famous already - because it doesn't work.
Trust me, I've had this for 10+ years ..... THERE IS NO CURE ...... & if there was, your GP or pulmonary consultant would have you on it within days.
Exercise, keep yourself fit, eat your 8 a day ...... appreciate every day, spend time with people you love, do the things you've always wanted to do, don't put anything off till tomorrow, see the funny side of life ....... & get the best out life - it's the only way.
& more to the point, think how lucky you are to be alive, to have lived a life & to not be Stephen Sutton, the poor 19 year old who's in the news at the moment with end-stage terminal cancer, or some poor 10-year old kid in Africa shot dead by some rampaging regime ......