A.Oral health expert
There are many,many causes of bad breath.
The majority of the time, halitosis originates from the mouth/oral cavity.
You say you are doing everything you should- have you seen a dentist? It is possible that you have periodontitis which is a leading cause of bad breath. In this case brushing, flossing etc will not help. You will need to do a proffessional cleaning.
Sometimes bad breath can also be the result of ulcers or a GIT problem
However, you first need to exclude the major cause of the problem which most likely is in your mouth.
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