People are judging me!!!

On Friday night i bump into my brother's friends. They ask me what is my plans for the night. I told them I'm meeting up with friends. She ask me you going to pop some pills and have fun. I told her i don't do drugs. I didn't ask her why she ask me that question. I already assume cause my brother does drugs and i do it to. Her man was standing there telling her i don't do drugs and you can't judge a person. Then she ask me am i going to smoke. I told her the only thing i smoke is cigarettes nothing else. Why do people think i do drugs? Do i look like I'm on drugs. I don't used any kind of drugs. I know my brother's friend does drugs. You could smell the ganja on her everyday. People should stop judging me because I'm related to a pot head!!