When we paint, we wait for weather conducive to opening windows. I close the door to Timber's area and open the windows in the area we are painting and in Timber's area. That sounds like just what you are talking about. It hasn't caused any problems for him so far. On the other hand, if you have the option to take him to your parents it might cause you less mental angst to just do that! We don't have any carpet (all hardwood and tile) so I haven't had any experience with that.