It was an excellent episode and a great performance by Cristin Milioti. The only part I had an issue with is you had to suspend disbelief a bit with the ending. But it doesn’t take away how good the episode and this show is.
Spoiler
I find it hard to believe that not a single person decided to open a window in the house, or Johnny Viti NOT closing his window. Also, a couple of people in the house were together in a room/area. I’m not sure how it works, but does CO make everyone unconscious at the same time? If not, then someone should notice if the person with them in a room passes out. A couple them obviously passed out while standing.