It would be cool if they crapped stuff Bioanalysis people could clean up. Is there a mat in the game called "Brown Goo?"
There should be.
Maybe have a new stim infused with this "Brown goo" that give you and amazing short burst of speed(Like you do when you need to go toilet badly), until you get forced animation that of sickness and you then cant move of fight until you spewed it all back up. Or create Pheromone grenade canister you can use that such a bad smell that NPC's are just overcome with methane gas, like a form of CC in a way.