As a nurse, I have had encountered many "smelly" problems, if someone is grossly obese they will have a issue with personal hygiene. Firstly they will sweat a lot and secondly, it is difficult for them to physically reach and cleanse intimate areas. I remember a lovely 35 year old patient, 25 stones, two of us were washing her, my colleague shifted her stomach so I could wash her groin area, it was sore, cracked and full of maggots. We never told her, I think she would have been devasted. This lovely lady had terrible arthritis.
Another that springs to mind is a 40 year old tramp who was delivered to us via A&E, the porters brought him to the ward in a body-bag. this guy was a tribute to the parasitic world. He was jumping, creeping, you name it, he was a main man host, When we had him stabiised and generally de-loused, we took him into the shower unit and jet washed him, then a nurse who had previously trained as a hairdresser trimmed his hair and beard. When the the next shift came on, none of then reconized him.