Thanks for your question on Health Care Magic.
I can understand your concern.
Yes, scar tissue development is inevitable. But no need to worry for this because it is inactive, healed lesion.
These scar tissues directly don't cause breathlessness.
But they cause inflammatory reaction in lungs known as
bronchitis.
And this bronchitis can cause breathlessness.
So better to get done PFT (Pulmonary Function Test).
This is needed for the diagnosis of bronchitis. It will also tell you about severity of the disease.
And treatment of bronchitis is based on severity only.
You may need inhaled bronchodilators and inhaled corticosteroid.
So don't worry, you will be alright.
Hope I have solved your query.
Wish you good health. Thanks.