What to use to kill already painted sealed cigarette rooms?

I moved into an apt that had smokers living there before me. I have a baby due anytime soon. Lived in for about 2 mnths and smell still isn’t gone. What could I use to get rid of the smell? I am leaning towards mixing bleach and water and spraying the walls down. Even closets reek of it. I took a towel I haven’t used from one of my closets and it reeks of the smell as well. Now I have to go through the whole apt with something to rid the paint/cigarette smell. The landlord repainted b4 I moved in, but I am a nonsmoker and how could I request for a non smoking apt when they don’t even enforce nonsmoking in the apts? I also purchased an ionic air purifier which was used before. IT worked for a couple days, but now I’m not sure if its doing its job anymore. :-( Suggestions would be great.