Bad breath can cause discomfort for both the person and those around them, according to the Ukrainian therapist Mykhailo Tsiurak. Why bad breath can occur In medical terms, bad breath is called halitosis, which can be either physiological or pathological. Physiological causes of halitosis Morning breath after sleep is a normal occurrence and usually goes away after brushing your teeth;Smoking;Excessive alcohol consumption;Eating “aromatic” foods such as garlic, onions, etc.Pathological causes of halitosis Oral diseases: tooth decay, gum disease (periodontitis), stomatitis, chronic tonsillitis,…