This story started 12 years ago.
There used to be an old chap who lived next door to us. He lived alone and had no family left. He used to come and visit my mother when me and my brother were at school and dad was working.
On a Saturday he used to bring us fish and chips wrapped in greaseproof paper. This happened every weekend without fail. After a while he became unable to climb the stairs and got moved to a ground floor flat just around the corner, he would still visit but not as often, eventually we lost touch, after coming back from a family holiday we found out that he had passed away in his sleep.
A week or two after his funeral we started getting a strange smell in the house, my parents thought some food had been left somewhere or a bird had fallen down the chimney and died there. We hunted high and low basically ripping the house apart trying to find out what this smell was and where it was coming from. Months after smelling this smell in certain parts of the house we realized what the smell was.
Now the only place in the house the old man had not been in was my parents bedroom as the one time he came and mum showed him round (as we were in the middle of having work done) was my parents bedroom. This is the only place we have never smelt it. It was a really strong fish smell.
Up until last year it seemed to have vanished, but I got really poorly and had to be admitted to hospital, on returning home it was back. I see it as an "I'm just making sure you are ok" kind of visit which is nice as he was a really lovely man.