Most dentists and oral hygienists point to bacteria as the primary cause of bad breath, and while a new study does not dispute that fact, it explores the interactions between odor based on food and the smell caused by bacteria.
Published in the journal Current Opinion in Clinical Nutrition and Metabolic Care, the study notes that while almost all bad breath comes from microbes in your mouth, occasionally the smell can stem from food in your gastrointestinal tract.
In particular, the report states that halitosis caused by smelly food - which it terms "transient-altered" breath - may emanate from the throat, where the odor gradually transitions from that of the odiferous meal to that of bacteria in the esophagus.
It poses the question - How can a person treat bad breath that they can't reach with a toothbrush or mouthwash?
The answer, according to the paper, is to try oral care probiotics. These products are not so much designed to kill microbes as to replace the offending strains with harmless varieties.
Currently, individuals looking for probiotic rinses, powders or tablets may consider trying AKTIV K12 probiotics products.