Been there, done that, smoking for years and quitting several times that damaged my lungs.
Following 30 years of asthma, weak lungs, breathing problems, expensive inhalers, spent $Thousands on doctors. Doctors only know how to treat symptoms, they don't attempt to cure.
The bottom line, all of my suffering ended with inhaling Colloidal Silver via a nebulizer. I love the Uniclife Portable nebulizer. You inhale CS for 15 minutes 2x a day until symptoms go away, then repeat as required when symptoms re-appear.
This kills all fungus, bacteria & virus that cause lung problems, it is a MIRACLE for people suffering with lung problems.