High-altitude flatus expulsion is a scientifically sound term for flatulence at high altitudes. While it may seem humorous, this condition is a real phenomenon that affects many individuals while traveling by plane or at high elevations. However, for those who find the term a bit too technical or off-putting, there are alternative synonyms to describe the same situation. Some humorous alternatives include "sky toots," "mountain farts," or "elevation emissions." More scientific terms include "aerogastria," "high-altitude gastrointestinal syndrome," or "hypobaric flatulence." No matter the term, it's important to be mindful of others and practice proper etiquette when experiencing gas at high altitudes.