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The image of blackened lungs isn't a prop. It's the harsh reality of smoking. While healthy lungs are a pinkish color, cigarette smoke causes permanent, heavy staining from tar and other particulate Brown Phlegm: What Your Mucus Is Telling You Effect of Smoking On Sinuses American Sinus Institute American Sinus Institute What Is Smoker's Cough LloydsPharmacy Online Doctor UK
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