If however I hear a "bump in the night" and I don't know what it was, like maybe the cat knocking a vase off the Baby Grand, I will have to investigate.
Clearing anything SUCKS! The average homeowner is best served in my opinion by staying in a "Defensive Position" if they are positive that someone has invaded their home. As far as the couch fire, that's what the Fire Dept is for. As long as you are minimizing the amount of smoke coming in to your "safe room" you have some time.
You do of course have an exit out the back of your Safe Room too don't you?