Hi -- hope you are okay -- for me, my breath problem I found was caused by consuming foods and especially drinks with sulfite preservatives in them. These preservatives are in most processed foods -- my worst issues came when i drank wine or beer, but were still apparent with: eating processed meats, drinking apple cider, some long life milk drinks, etc etc etc -- even some tooth past has sufite preservatives --
Also try taking the mineral capsule molybdenum, which helps an enzyme called sulfate oxydase convert sulfites into sulfate, try zinc, vitamin c, iron -- and loads of probiotics. Also really helpful was dissolving the herb turmeric in water and drinking that -- supposedly puts back good gut bacteria...