Here's a true story about when I worked at Farmland Foods.
MY job was boning the shank (knee down) on hams. I did this as the ham went by me on the conveyor belt. The next guy on the line boned out the femur.
One day, I noticed this horrible smell as I was boning a shank. The guy boning the femur was running behind that day since he was experiencing difficulties keeping his knife sharp. He should have been about 3 feet from me, instead he was about 15 feet further down the line. As he ran his knife through this one particular ham he discovered that the entire inside of the ham was abcessed (sp?). How did he discover this? The abcess burst and the contents squirted him directly in the face. His response was to IMMEDIATELY vomit all over the line! I am normally a sympathy puker, but I somehow managed to hold back the bile that day.

They had to shut down the line and sterlize it all over again. The guy that puked got yelled at by the foreman for making a mess all over the line.
Before I worked in a slaughter house my favorite meat was ham. 15 years later I am just getting to where I can eat ham and enjoy it again. However, seeing someone eat guacamole sauce still makes me gag to this day. (Guacamole is the same color and consistency as the inside of an adcess).