Suggest Remedy For Foul Smelling Body Odor

Hi -- My husband has an odor about him. It's not offensive like what you'd think of as body odor but it's kind of musty or stale smell. it's on his pillow and sheets and I can smell it when he's standing close to me. I haven't said anything to him because I don't want to offend him but I've noticed it for a few years now and it makes me not want to be close to him. He drinks occasionally and takes supplements for weight lifting but I think we generally eat/drink the same things.