Nightmare Fuel / Spy Fiction (2003)

• Lahder. A few seconds after inhalation, your body will get quickly covered in bleeding boils, then burst into a bloody mess - all in under a minute. That's if you're lucky and get the version that kills you that quickly, because guess what? Lahder can be modified so that it has a days or weeks-long dormancy period, during which it's completely asymptomatic but can still spread from victim to victim.