The solicitation says the new labs need “scent generators” or “combat stressors” — disposable containers that would be mounted on walls and last for about a month, putting out their foul scents for about 8 hours for day.

The scents to be generated “should induce battlefield sensory overload” and would include “hydraulic fluid, blood, vomit, diesel exhaust, fecal odor [and] burnt flesh” — the kinds of stinky stuff that military medics would be confronted with while helping injured and wounded servicemembers in real combat situations.

But this isn’t the first time the federal government has needed someone to create artificial poop smells — or to create them in the name of national defense.