It is an unpleasant situation that affects many people at some stage of their lives. Bad breathing has unpleasant consequences on the patient's social contacts and professional activity.
In 90% of cases, the causes of malodour are found in the oral cavity, with the main cause of germs, which in their metabolism produce smelly sulfur compounds. If teeth and gums are not properly cleaned regularly, germs increase in number and pathogenicity. In the morning after sleep, bad smell is more intense, because the flow of saliva that acts defensively decreases.
In people with gingivitis or periodontitis, that have an increased amount of pathogenic germs, bad breath is more intense. Also, people with intense grooves in the tongue are more likely to accumulate a microbial smear, so it is important to clean the top surface of the tongue with the toothbrush or tongue cleaner in daily hygiene.
Consuming foods such as garlic, onion, broccoli, create smelly breathing.
There are of course also systemic diseases that can lead to an unpleasant odor. Sinusitis, tonsillitis, gastroesophageal reflux disease, diabetes mellitus are some of them. Smelly breathing is very common in smokers.
There is, of course, also a small category of people suffering from so-called 'idiopatic smell'. In this category there are no local or general causes, but for unknown reasons, the microbial flora of the mouth is disturbed and more anaerobic germs are responsible for the production of malodorous compounds.