When it's necessary to fart in public, one performs the "cammo cough" whereas he/she fakes a cough while passing the fart at simultaneously so as to disquise the sound of the fart. The "cough" must be louder than the fart itself so as be successful.
"I just had to fart in the elevator but I used a "cammo cough" so no one would know a fart just transpired"
by D. Simpson October 19, 2007