Completely OT, but I wanted to let you know that when I was taking a test on Thursday in my Psych class (psych as a natural science, so we're getting into a lot of biology), and the topic was sensation... I definitely had your explanation of how fear gas works (from your latest fic) running through my head. Medulla, amygdala, etc. etc... I'm not going to say it didn't distract me, because then I got mental images too. xD