Infections and allergies can cause thick, glue-like nasal mucus. Environmental factors, like a dry climate, can also contribute to this. Nasal mucus is created by the tissue lining of your nose and ...
Mucus is a normal part of the lungs. But smoking and other issues can cause too much mucus to collect there. (Photo Credit: iStock/Getty Images) Your body makes about a liter (approximately 1 quart) ...
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