I figured it out. It has to be a smell thing. They need air circulation. The problem is that we know that PBO gets cold easily and turns the heat up really high when it’s cold outside. When they turn the space heaters up on this “tent,” it could get really hot. I wonder if they’re gonna use energy efficient space heaters. I think they should “go green” and not use any heaters at all. LOL I hope they don’t catch the tent on fire . . .