One strip also states that times when Roger is grilling on summer season holiday vacation are the closest issue to an exception to the normal rule of Jason owning to go outside the house to get contemporary air (specifically because Roger's attempts.
In the episode "Lice Capades" he makes an attempt make Kenny a scapegoat for his lice trouble (not realizing absolutely everyone experienced lice), and on "proving" Kenny's guilt with an elaborate, phony experiment, Cartman then organizes a cruel.