Bad Breath Summary There are many reasons why you might have bad breath. You can get it if you don’t brush and floss regularly. Bacteria that build up in your mouth and between your teeth produce the bad odor. Other problems in your mouth, such as gum disease, dry mouth or cavities, may also cause it. Sinusitis or problems with your nose may be to blame. You can also have bad breath if you eat some foods, like raw onions, garlic or cabbage. And of course smoking causes its own bad aroma. Some diseases and medicines are associated with a specific breath odor. Having good dental habits, like brushing and flossing regularly, help fight bad breath. Mouthwashes, mints or chewing gum may make your breath fresher. If you have an underlying disorder, treating it may help eliminate the breath odor. National Institute of Dental and Craniofacial Research Specifics Acute Sinusitis Mayo Foundation for Medical Education and Research Mind Your Mouth: Preventing Gum Disease National Institutes of Health Peridontitis Merck & Co., Inc. Find an Expert American Dental Association American Dental Association National Institute of Dental and Craniofacial Research National Institute of Dental and Craniofacial Research Prevention and Risk Factors Ask Your Dental Hygienist about Understanding and Eliminating Bad Breath American Dental Hygienists’ Association Mouth Rinses Academy of General Dentistry Oral Health: Brush Up on Dental Care Basics Mayo Foundation for Medical Education and Research Tongue Scrapers Only Slightly Reduce Bad Breath Academy of General Dentistry Children Bad Breath Department of Health and Human Services, Office on Women’s Health Bad Breath Nemours Foundation Array Breath odor Dental care – adult Clinical Trials ClinicalTrials.gov: Halitosis National Institutes of Health Related Issues Do You Have Traveler’s Breath? Academy of General Dentistry Does a Smaller Waist Mean Smelly Breath? Academy of General Dentistry Start Here Halitosis American Academy of Family Physicians Halitosis Academy of General Dentistry Journal Articles Bad Breath Teenagers What Causes Bad Breath? Nemours Foundation