I'm going to stay at my dad's to visit for a week. He hasn't really seen the baby and she is 6 weeks old. He smokes inside his house, but won't smoke around the baby. The room I'm attains in he doesn't smoke in, but the smoke smell is in everything. Everyone is telling me it's a bad idea, but I was thinking of getting an air purifier to take with me. I really want to stay at his house. Ideas?