When you are in a zombie apocalypse, you need to be able to know about an exit when you are in a house. You are going to need to find an escape route out of a building when you go in.
Always look around for one. Sometimes you even need to be creative in your escapes. Like a air vent or a tiny window in a bathroom. Just be sure is safe around it when you exit. Because if there are zombies around it, you are dead no matter which way you go. Just remember. When in doubt, know your way out
(From Zombieland if your wondering)