Causes of bad breath: Allergic reactions can cause gums to swell and bleed but also stomach problems or stomachallergic reactions can cause bad breath.
Answered 4/16/2013
5.2k views
Congestion: If your allergies are creating congestion and mucous, they could cause bad breath. However, the most common cause is dental-decay or gum/ bone disease. Have it checked.
Answered 5/13/2013
5.1k views
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