I would say to just go to a friend's house or find somewhere you can go to smoke. Doing something like that in your situation in indeed, a big risk. There is always an alternative to things.
if you smoke tobacco then you could mix it with weed and say that they are american cigerrettes, then somehow aquire a pack of amarican ciggerettes to just leave laying in your room and he'll take your word for it, you could go outside too, you could burn incense, run nail polish remover on the part of the door that doesn't move, descretely drop hints about weed and see if he's cool with it, make a sploof, invest in a vaporizor turn the fan on, spray febreeze daily, etc. these are my suggstions, enjoy :sifone:
Buy a freaking can of Ozium and be done with it man! Takes care of the reekiest reeks, the funkiest funks, the crappiest craps and the skunkiest skunks.
I second the ozium, you won't even need candles. Just sploof your entire bowl sesh and then a couple quick shots of ozium and you're good. He will probably actually think you just cleaned too as it really smells like a powerful cleaner haha
Shit, I got pulled over with a lit bowl in my lap, was too tired / stoned to bother noticing it was still smouldering but one good shot of ozium and it ended up with the cop telling me to go on home after the emergency call at work i was headed to and get some good sleep.