There's an importnat lesson for everybody who smokes pot; you may not be able to smell it, but those of us who don't smoke can smell it when we walk into your house.
I remember when I was in my 20's and had a couple of room mates who smoked up. One day my one room mate said his mom was going to be coming over for lunch. I asked what he was going to do about the smell of pot in the house. He said "what, you can smell it?"
They went out for lunch instead.