Antisocial Farter:  One who excuses himself and farts in complete privacy.
Amiable Farter:  One who loves the smell of other peoples’ farts.
Athletic Farter:  One who farts at the slightest exertion.
Bruise Farter:  One who farts so hard and loud that he bruises his butt cheeks.
Dishonest Farter:  One who farts and then blames the dog or the kid.
Environmental Farter:  One who farts regularly but is truly concerned about air pollution.
Foolish Farter:  One who suppresses a fart for hours and hours.
Female (Dishonest) Farter:  They let you think they don’t fart until you marry them.
Honest …

My hat goes off to the site who has this content
http://www.heptune.com/farts.html
Where does fart gas come from?
The gas in our intestines comes from several sources: air we swallow, gas seeping into our intestines from our blood, gas produced by chemical reactions in our guts, and gas produced by bacteria living in our guts.
 What is fart gas made of?
The composition of fart gas is highly variable.
Most of the air we swallow, especially the oxygen component, is absorbed by the body before the gas gets into the intestines. By the time the air …