Just to get things straith here. There is no yes or no answer to this one, as reality is far more complex than that.
By seeing how a smokers lung Looks like compared to a normal lung, you can pretty much understand what Smoking does to you lungs. If You’re asking, how do you clean your lungs. That i’m afraid is the wrong question.
24/7 the Body tries to maintain itself in the best possible health state the current conditions allow. If you stop Smoking, this innante Body ability will, given enough time, and sufficient means, bring a black lung back to a purple one.
However, this process most certainly would take under normal conditions more time that you would have left to live after you stop Smoking. Thats why you see the black lungs autopsied on smokers. They probably smoked until their death, or after stopping Smoking didnt had enough time for the lungs to clear. You do not see the black lungs because no Cleaning is Possible. Get that trough your head !
The correct question is:
How can i maximize and optimize the cleaning of my lungs after quitting Smoking so as to bring them to their Initial non-Smoking state in a realistic amount of time ?
You can do that. You can get back your lungs in as less as 2 to 3 months of strict diet/Regime, eating and drinking only specific items. Maybe even less.
All you would Need to do, is to give the Body the proper Tools with which it can optimize and amplify ist innante cleaning and reparing abilities.
Lucky for you the lung is one the the most potent self repairing organ in the Body.
Now the question is, what can you do to help it clean itself faster ?
What do you use to clean your Hands when their dirty ? Water.
The purer the water is, the more potent it is in cleaning stuff. You cannot hope to clean yourself using allready dirty water, so you Need to get the purest water you can get your Hands on and drink between 4 to 6 Liters a day.
Thats right, you Need to drink distilled water, in those quantities. To maximies the Body healing capability, you also Need to stop eating, and start fasting.
Once you start eating again 30 to 40 days later, (it can be even 60 days later, depends on how fat you are), eat only raw fruits and vegetables.
You will know this works, because while fasting with distilled water, a smoker will start to give/spit away copoius amounts of sh*t, that Comes out of your lungs. What do you suppose will happen if you Keep doing it.
In the end the lungs will be even better as they once were once you started Smoking. There is no miracle about it. Ist just the way nature works.
However doing this seems pretty far fetched for a normal Person out there, esspecially since doctors themselves have no ideea such a Thing might be possible. Thats why People probably have a hard time quitting, they say to themselves, the lungs are allready f*cked up, and theres nothing i can do about it anymore, might as well continue Smoking. And they do, while the Firmas selling medications round up their profits.
You have to be smarter than that ! Just follow common sense and observe Nature. Everything can be healed give the proper conditions.