Fellow stoners unite! I need your help.

So I will get right to it. I am playing a prank on my room mate and need to make our apartment reek like marijuana. The thing is, I can't smoke inside the apartment and it has to be from the outside of the apartment.. I have been trying to find a marijuana spray that smells like pot? I was thinking I could spray it on the door or under the door... a marijuana smelling stink bomb?

Pretty much I need my room mate to come home and smell pot right away and not understand where its coming from. Let me know if you have any creative ideas!