Mr Fish
Slippy sloppy, The
radioactive material in enclosed space gets blown up, blasted into the airhow?
I remember this story once where if you want your apartment to have a nice vanilla smell you can put a small amount of vanilla extract into your oven and it will cause the liquid to turn into gas and flow out of the oven but she had too much vanilla extract and so once all was said and done the apartment stunk of it. I dunno how FEV works on a liquid and gaseous level but maybe the radioactive element in it (the smell of vanilla) is expanded upon in a gaseous form.
Of course, why isn't Mariposa radioactive as The Glow is after the events of Fallout 1?
No idea.
Could be a nuclear reactor that got cracked?
Could be waste storage that got cracked open too.
Could be the S'Lanter farted too much on their way out.