I'm not going to let my brother in law stay with us
Is there any problem between you and him?
Yes, we're already living with each other and I don't like him, he's also a stinky guy.
It is expected that you look out for your family. Do you think you can talk to him about your concerns?
No, I don't want to talk to him since that stinks and I already said my point.
If you want him to leave, that is understandable, but you cant just kick someone out without talking to them.   Ending it well prevents family drama.