Well to update my comment I made the other day, I posed the question to my wife.

He first reaction was a 5 second pause :P

Then she said:

"Why the hell would you come back to the house if you knew you would kill me and the kids?"

Well that made me laugh.

She then proceeded to tell me that if we had no kids, she would open the door so we could go together. But considering we have kids, she would not expose the kids to the danger.

I agree with her decision. Plus there would be no way I would go home knowing that I would kill my kids and wife by exposing them.

Looking at it now, if decontamination was all I needed to do, then I would be prepared for that.....

Like JC said....time to go to google.