Probably methane, which is produced by our bum.
It is wind travelling through are body and then fast our poo thats why it is so smelly !
The smell is similar to the smell of hydrogen sulfide (rotten eggs).
Propane itself has no smell. What you smell with propane (or natural gas, etc.) is actual a chemical odorant additive required by law that smells similar to "rotten eggs".There are many possible sources of such smells, including actual rotten eggs.
Color, smell, state of matter. For example: sulfur (element #16) is yellow, smells like rotten eggs, and is a solid.
Volcanic gases can have a strong sulfur smell resembling rotten eggs, due to the presence of sulfur dioxide and hydrogen sulfide. Other gases emitted by volcanoes can have a pungent or acidic odor, depending on the specific composition of the gas mixture.
The main product is sulfur dioxide, which smells like rotten eggs and when added to water forms sulfurous acid. In the presence of a catalyst sulfur trioxide forms, which when added to water makes sulfuric acid.
It smells like rotten eggs!!!!! Ewww!!!!!!
Sulfur
It smells like rotten eggs.
Sulfur
The car exhaust smells like the rotten eggs as a result of the hydrogen sulphide. This usually happens, when the engine is not serviced for a long time.
Usually gas smels like rotten eggs when the gas is too rich with additivies.
H2S is a gas.It smells like rotten eggs.
marijuana
It's yellow, and it smells like rotten eggs
it smells of dog poo wich smells like my mum asswell then lol roton eggs aswell
Sulfur is a yellow element that smells of rotten eggs.
Sulfur rocks smell like rotten eggs