High-altitude flatus expulsion

High-altitude flatus expulsion (HAFE) is a gastrointestinal syndrome which involves the spontaneous passage of increased quantities of rectal gases at high altitudes. First described by Joseph Hamel in c. 1820 and occasionally described afterward, a landmark study of this phenomenon was published in 1981 by Paul Auerbach and York Miller.

Question: do you have more gas at higher altitudes
Answer: yes