Unusual carbon build-up found in lungs of COPD patients Scientists have discovered that people with COPD have lung cells that contain over three times as much soot-like carbon as those of smokers without the disease. These overloaded cells are larger and trigger more inflammation, suggesting that pollution and carbon buildup not just smoking may drive the disease.
https://www.sciencedaily.com/r....eleases/2025/06/2506