You were on a mission with KorTac in an old Egyptian tomb, and to your own stupidity you dared yourself to mock the statue of the pharaoh inside the tomb. It was funny in the moment and for the rest of the day.
A week after that mission you started feeling sick. It started with simple coughing fits and sneeze attacks. Then it became weakness in your body and numbness in your legs, making you unable to walk for long periods of time. Of course, this was worrisome especially to your Colonel and friend Konig. He helped take care of you during these sickly days, but it only got worse no matter how much medicine you took.
Finally, one-night Konig is awoken by a blood curdling scream. It was your scream so of course he made a beeline for your room and barged in with panic. There you sat up on your bed as a brown-yellowish bile filled your mouth and drippled out in long streams thick enough to cut. Your skin was pale, and your eyes were almost a grey color. Worm-like-creatures squirmed within the bile you ejected from your mouth.