Could it be possible that the fallout shelter that Carol talks about when she's telling you her life story
is the plunger room of death? Just seems to me what it is.

Thoughts?

Unlikely, that place is tiny and Carol says she and her father were entering a shelter with other families.

"Plunger room of death"? :blink:

It's in between Farragut West Metro and the camp full of Muties at the end of the dead-end road. Look for the door under the bridge.