Phlegm: It won't harm you, it is your own mucus, if you swallow it, it will eventually be excreted.
Answered 10/30/2016
4.7k views
Neither: Phlegm or mucous is a natural body secretion and swallowing it is natural and not harmful. Blowing your nose and expectorating are also ways to get rid of excess mucous.
Answered 3/6/2016
4.7k views
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A doctor has provided 1 answer
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