Effect of Mouth Rinses in Oral Malodor

Inclusion Criteria: * Caucasian * Age ≥ 18 years * Organoleptic score of breath ≥ 2 * VSC readings (sum of H2S and CH3SH by OralChroma) ≥ 120 ppb\* * Intra-oral cause of bad breath * Non-smokers * Willing to participate and able to give written informed consent Exclusion Criteria: * Ongoing dental treatment or any other medical treatment of the oral cavity * Any known allergy to previously used oral hygiene products or any known allergy to any of the ingredients of the study products, which are used during the study * Any pathological change of the oral mucosa * Use of prohibited treatments / therapies and/or abuse of drugs, alcohol, etc * Pregnancy or breastfeeding * Active caries * Acute sinusitis * Severe oro-pharyngeal infections * On medications which can cause malodour * Reduced salivary flow due to pathological reasons (e.g. Sjögren syndrome) * Situation considered not compatible with the study according to the investigator's opinion; the latter includes: patients eating very spicy food, persons under homeopathic therapy, patients who used antibiotics during the 2 months before the study, patients frequently using chewing gum, patients under corticosteroids or other serious medications. * Patients unwilling to abstain from additional oral hygiene (only toothbrushing allowed) particularly mouthrinse, chewing gums, breath strips, etc