Main-Forerunner.png
Main-Covenant.png
Era-human.png
Halopedia Era UNSC.png
HaloArray.png
Reclaimer - H4.png
Era-rw.png

Hydrogen sulfide

From Halopedia, the Halo wiki

Wikipedia.png
There is more information available on this subject at Hydrogen sulfide on the English Wikipedia.

Hydrogen Sulfide, chemical symbol H2S, is a colorless, toxic, and flammable gaseous chemical compound responsible for the foul odor of rotten eggs and flatulence.

When the Engineers resort to anaerobic digestion for food, bacteria in its anaerobic sacs convert the organic material to energy. This process gives off trace amounts of hydrogen sulfide.[1]

List of appearances[edit]

Sources[edit]