fart antibodies
The ability to overcome and not be phased by ones own odor or discomfort of gas being expelled from the individuals anus. This is something that is acquired from after years of gas inhalation; similar to a tolerance of ones own bodily stench.
"Dude! Your fart stinks man!"
"Oh really? I don't really smells them anymore thanks to my fart antibodies"
"Oh really? I don't really smells them anymore thanks to my fart antibodies"