MY HUSBAND HAS COME UP WITH VERY BAD AND ODD

MY HUSBAND HAS COME UP WITH VERY BAD AND ODD SMELLING BREATH. A BAD BREATH i HAVE NEVER SMELLED BEFORE. HE DOES NOT DRINK OR SMOKE. HE TAKES AZORE FOR BLOOD PRESSURE AND HASJUST RECENTLY BEEN TOLD TO TAKE A WHOLE PILL INSTEAD OF 1/2 PILL. ACORE DOES HAVE A FUNKEY SMELL OF ITS OWN. HE STARED THE WHOLE PILL ABOUT A MONTH AGO AND THAT IS ABOUT HOW LONG THIS BAD BREATH HAS BEEN NOTICED. HE SEES DENTIST ON REGULAR BASIS. DO NOT BELIEVE IT IS TEETH RELATED. ANY THOUGHTS ON THIS MATTER?