Halitosis is a common condition disturbing a significant number of people worldwide. 1,2 Overall, the occurrence of this problem is high and has a substantial impact on the quality of life of the affected individuals. In addition, patients suffering from halitosis may display avoidance behaviours due to social insecurities and fear of rejection. [3][4][5] The aetiology of halitosis is complex involving several oral and medical conditions. However, in the majority of cases, the oral cavity is responsible for the mouth malodour. Halitosis originating from the mouth is usually the result of microbial metabolism of the plaque biofilm. Bacterial niches such as the tongue surface,