Prior to going into nursing, I worked for a year as an ER tech. One night we had the fire department give us a heads-up that they were bringing in a patient that smelled worse than many of the several-day-old dead bodies they had recovered. We took it with a grain of salt, and continued on as normal.

When the guy arrived, the gravity of that warning became apparent. The patient's leg looked much like the one pictured above, covered completely in maggots. 'Failure to thrive' was one of the many diagnoses, IIRC. Anyhow, the smell was so overpoweringly bad that despite rooming him alone and packing the bottom of the door with towels on either side, most people in the ER were left holding their noses. Some requested to leave AMA (against medical advice) in an effort to escape the nauseating smell.

Poor guy lived in his own home and had family nearby. They just stopped visiting him, and he stopped caring.