He is vulnerable, Neuro divergent, mental health issues, doesn't go college or work etc. I have had 3 years of hell, he has calmed down in some ways as he was smoking weed daily. He still does now and then, but more worrying he has starting vaping THC. I have warned him if he brings, any drugs in my house he is to leave. He got paid Monday, been out for two full days, home late and violently sick in the night. I have y seen him but guessed it was weed. Today I noticed his eyes glassy and him smiling, I asked to check his vape and he has refused. I have asked him to hand it over for me to check or for him to leave. He is refusing. He is starting to get agitated, swearing what do I do? I can't allow it in my house and for him to do it under my nose. If I kick him out, I am scared of what else he may do he is already threatening.