Board Thread:Roleplaying/@comment-5543592-20170530194819/@comment-5543592-20170622180740

"No, no-- it works under the assumption you're exhaling rads.  It's regulates how much you'd want to breath out.  Think of it like a reverse gasmask-- as if the radiation was coming from the person, and it's there to make sure one of it gets out into the world."