Bad breath does not enter the mouth, and the root cause should be traced to the metabolism and detoxification of the internal organs.
For example, people with bad stomach and indigestion always feel that the food is not digested well after eating, and they will burp with stomach gas, accompanied by the smell of vegetable rice, and the breath exhaled in the morning has a bad smell. These things can't be solved by brushing your teeth every day, but by finding the root cause.
Detoxification is from the inside out, not just the surface cleaning, so it is suggested that he can go to see Chinese medicine and start conditioning from the inside.
I used to have bad breath. Examination is the cause of stomach trouble. Helicobacter pylori exceeded the standard by dozens of times. Now after treatment, I use Chinese medicine to regulate my internal organs. Usually go to bed early and get up early, and now there is basically no bad breath.
Hope to help you, hope to adopt!