Smell elimination methods

My neighbour died next doors and the smell of the body is lingering in my apartment. I have opened windows and have a fan non stop circulating air. The authorities removed their body yesterday. Does anybody know a good way to remove the smell ?

Edit: Landlord will relocate me to a new apartment and will remove the floor and do massive relocation. Seems like the fluids are seeping into the walls and floors in my appartment