Back in the day...
The laundry detergent (Salvo, I think) that came in a disc that you threw into the washer--kind of the precursor to today's pods. I don't know how it cleaned, but Mom said the disc never dissolved completely, so there were specs on clothes and chunks in the bottom of the tub.
As for the discussion of the folks with the mildew-scented clothes...yes, very familiar. I think it's usually one of two culprits: hang-drying in a musty basement, or leaving a load of clean clothes in the washer for too long and then throwing them in the dryer without doing a sniff test. I myself have gone to put a load of wash in, only to encounter clean/formerly clean wet clothes. "Huh. When did I do this load?" For me, that's an automatic re-wash, but not for everyone, I guess.