Brother Called the Police becasue of a weed smell

It sounds to me like your brother would be a lot better off without your token 'rent'. I still wouldn't want you living in my house.
Funny thing is I'm all in favor of pot, but using it for any trumped up reason in someone else's home is just selfish and disrespectful. If you can not follow the rules of the house, then get the fuck out and live in your own house where you can make any damn rules you choose.