White Shark
When your intestines are healthy, and your diet is good, and you sleep regularly, and your teeth are healthy, you don't need tooth brushing to have good smell from your mouth.
If you do smell bad, you have a problem with your GI tract and your liver and some people may have sinuses problems or problems with tonsils. Having holes in tonsils and small stones may be the source of bad smell.
Most likely all your problems are thanks to
Antibiotics and high carb diet of processed foods, or thanks to some other medications you may have taken.
Work on it.
Heal your liver and your intestines with right diet,
Liver Flushes and healthy lifestyle.
WS