, lung & sinus infection
may also be the cause of bad smell in the mouth. 90% of bad breath
is due to a dirty tongue. Kindly consult a physician & dentist
in person for further suggestion. We need more investigations to decide upon treatment. You may need deep cleaning. Rinse your mouth thoroughly with a mouthwash until then. Advance procedures can be done with laser
too. You may consult me in person dental tips: - visit a dentist every six months for cleaning and a thorough dental check-up. Limit sugary food to avoid tooth decay
. Gargle your mouth thoroughly after every meal. Scrub gently to clean your tongue with a tongue cleaner. Floss all your teeth inter dentally & brush twice daily, morning & night, up & down short vertical strokes, with ultra-soft bristles, indicator brush.