I said to my neighbour Jerome, "Jerome, you're like marmite." and he said "What, you either love me or hate me?" and I said "No, you're black and you smell."
I'm trying to understand this joke, are you saying black people smell bad?
It's from something my (white) neighbour told. She said to me "you're black and you stink like shit, that's pretty much it about you."
You shouldn't assume or say that black people smell just because of the color of their skin, that's pretty rude and could hurt some people's feelings. Your neighbor may not speak with you anymore after speaking like that about him.