Bad breathe

Jp

So my husband breath smells horrid. I know it's because of his teeth. He brushes Day and night but the damage is already done. I can't stand it! he talks and I can smell it. (Heightened sense of smell dt pregnancy🤢) makes me want to throw up. How do I go about telling him we need to do something about them? I just figured someone else would have told him about it already.