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A member asked:
What is grey mucus? what causes grey mucus?
A doctor has provided 1 answer
Pollution: Usually grey mucous means that you have been in a polluted or smoky area and your body is trying to get rid of this material and prevent it from getting into your lungs. If you live in a polluted city it may be hard to avoid inhaling the polluted air. If you are coughing alot, felling sick, or wheezing then you should see a doctor.
Answered 8/13/2018
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