What can i do to clear out my lungs and make them strong again after quitting smoking 6 weeks ago?

Dont Smoke and : 1congratulation that was the first step and no matter what do not start smoking again ang give your lung to heal, your lung funstion will improve by itself by30% in1 to3 months 2incorporate eexercise in your daily activities, aerobic exercises, breathing exercises, daily for30 minutes 3 proper nutrition and supplements with omega3, vitc, d may be beneficial by helping reduce inflammation good luck.