Q: How do you keep carbon monoxide from coming into your home?

A: Shrink wrap your home, then encase it in three feet of cement, until it's completely air tight. Nothing in, nothing out.

Make sure you wife and kids are inside the home before you start to save yourself from an awkward phone call later.

For best results, encourage one of your children to evolve into someone who exhales oxygen. You're gonna need that in a couple of days.