can armpit bacteria make the whole person smell?

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my father suddenly developed a terrible smell a few years ago that just seems to be on his whole body. it stays in his shower, washer & dryer, car, and obviously clothes and sheets. he has no new health issues or medications. i dont know where it originates - - could it be his armpits, and then the smell is so strong that it permeates all of his stuff? are there any specifically medical tests he should be having, in case it's due to some hidden illness?