Halitosis or chronic bad breath can't be resolved by using that mints, mouthwash or a good brushing can’t help resolving. It remains for an extended amount of time and may be a sign of something more serious.
What are the causes for Halitosis?
Dental Issues: Cavities and deeper pockets from gum disease give bad breath bacteria extra places to hide in your mouth that are difficult to clear out when you’re brushing or cleaning between your teeth. Either can contribute to halitosis.
Mouth, Nose and Throat Infections can lead to postnasal drip that may also contribute to bad breath. Bacteria feeds on mucus your body produces when it’s battling something like a sinus infection, leaving you sniffy and stinky.