a dry cleaner may refuse them if they are as 'stinky' as you imply- and they have no value in that state- so I would wash them- maybe 2 or 3 times- including vinegar in the rinse water to help disinfect them- if they come out ok that's great- if not, parts may still be salvageable. but as they are now I would not be concerned with them being *heirlooms* they obviously were not- though if they tolerate disinfecting/laundering they may become heirlooms.