Ethical Experimentation is a written note found in The Brigmore Witches.
I've managed to get my hands on an experimental formula being tested right here in Coldridge Prison. A mixture the prison guards call chokedust, which is normally capable of rendering prisoners vulnerable for a few moments. However, this new formula has the potential to make the victim forgetful as well. It's as if, once breathed in, the dust causes an acute temporary stupor.
It can be found in Coldridge Prison in cell A25 during the mission A Stay of Execution for Lizzy.