OK someone has HAD to have written this fic idea but I can't for the life of me find it:

Tim Drake (or other suitably traumatised Bat) is hit by a low dose of fear toxin - except they're so used to running on paranoia, anxiety and adrenaline that their behaviour stays exactly the same and no one else has any idea that they're in a chemically indused fear state for an upsetting amount of time

"It's the upsetting version of 'lovestruck character gets hit with love potion and acts the same' concept"

god gotham really does ruin everything huh

Oh yeah, fear and heart-pounding paranoia? Just another day in Gotham