Author : Paul Hata The nose can contribute to bad breath Thick mucus discharge resulting from colds, allergies, medications, pregnancy or hormonal changes can collect on the back of the tongue This layer of mucus provides a protective blanket under which bacteria hide Bacteria can also break down proteins in the mucus to create volatile sulfur particles Sometimes mucus, bacteria, and debris condense onto the surface of the tonsils forming small hard balls of material This is known as

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