Are you a cat or a dog person? The quiet is the first thing you notice. More so than usual, usually somebody is sneaking in whisky.
You smell burning. Maybe it's the grill downstairs. Some idiot once left his cell phone on there, and it ended up blowing up the kitchen. Stupid moron, you think, as you hypocritically play about with your idiot string.
In fact, shouldn't you be doing something? I know nobody's told you to do something...but you should.