If you are concerned about bad breath, just make sure you practice good oral hygiene. Brush your teeth and use mouthwash before you leave the house if you feel embarrassed. You could also carry mints, gum, or a mouth spray with you so you have the opportunity to freshen your breath when needed.
Have you spoken with your doctor
to see if there is something you can do that will promote the production of more HCL? There are a number of people that suffer from hypochlorhydria, so he should surely have some advice to offer!