how to conver this sentence to propositional logic

Question

I have the following scenario:

if someone is killed in any of the rooms there would be bad smell for the rooms horizontally or vertically next to that room and for that room itself for example if a person is killed in dinning room there would be stench in library dinning and conservatory rooms so

I made four rules like this : b1: sd => BL or Bd or Bc which gives not Sd or BL or Bd or Bc

andI made four of these rules

Now I want to say this sentenceaccording to the rules that are made above:

the person is not in library: I startedin this way: not BL => Bk or Bd or Bc which gives BL or Bk or Bd or Bc

but now I am stuck and I can not go any further. I want to say that sentence at the end according to the b1,b2,b3,b4

Can anyone help?