hydrogen sulfide

There are three basic facts about death: (1) We all have to die. (2) All young deaths are tragic deaths. (3) Some of us die in ways that are more interesting than others, and those deaths often make their way into case reports. This story involves all three.
Hard-boiled eggs (Credit: Shutterstock)
A major protein inside the egg, called ovalbumin, possesses the sulfur-containing amino acid cysteine. When heated, these sulfur atoms are converted to hydrogen sulfide, the nasty gas associated with rotten eggs and bodily functions. It doesn't take much to wrinkle our noses.