Stress and anxiety can have a negative impact on oral health and breath. When we are stressed or anxious, our bodies produce more cortisol, a stress hormone that can reduce saliva production. This can result in dry mouth and contribute to bad breath.
Chewing on herbs such as parsley and mint can also help freshen breath. These herbs contain natural compounds that can neutralize odors and provide a refreshing scent.

Bad breath in babies or young children may be a sign of infection or undiagnosed medical problems. Consult the child's doctor or dentist if an infant or young child has bad breath. A complete medical and dental history should be taken. The patient will be asked about their bad breath problem, dietary habits, tobacco use, medications, medical conditions, and family history.A dentist will examine the patient's mouth. X-rays may be taken, and periodontal charting may be done to determine if the odor is due to gum disease.
However, improper oral hygiene is not the only cause of halitosis formation. This troublesome condition may also occur as a result of using dentures or braces. The hard-to-reach areas around these fillings are difficult to reach with a toothbrush or dental floss, which is why bacteria that cause bad breath thrive there. Other common causes of halitosis include: diabetes, kidney disease and thyroid disease, infections of the sinuses, throat or tonsils, dry mouth, improper eating habits (drinking large amounts of alcohol, smoking, starving oneself), taking certain medications (mainly antidepressants, painkillers and diuretics).