Yes, Can Endometriosis Cause Bad Breath, Because Someone I Know

Yes, can endometriosis cause bad breath, because someone I know has foul breath. Her doctor had put her on the pill to stop the pain, but she stopped taking it about a year ago because of numbnesss around the mouth.That is about the same time I noticed her problem.
So could endo cause bad breath ? And does going back on some other pills or the injection make her problem go away ?