Apart from bad oral hygiene
Other causes of halitosis are
Certain foods and beverages like onion, garlic , tobacco products, dry mouth,sinus infections, pneumonia, bronchitis , other systemic diseases, dieting, tonsil stones and few other.
Next Steps
For detailed evaluation of your case/further queries /guidance/management plan,whatsapp nine three seven zero two eight four three seven six or connect via Practo.