text: No they don't.\n\nIn actual fact, the abnormalities of flight do involve \nquite a number of changes in air pressure as you\nclimb above the surface of the earth and fly through\nvarious manuvers which exert "G" forces on your \nbody.\n\nThe human body has two ports for equalization of \ninternal pressures: the throat and the rear end. So\nwhile this might sound a bit humorous, there is a \nlot of burping and pharting involved in flight.\n\nSince the internal atmospheric pressure within\nmost space ships and stations is just slightly \nmore than 1 atmosphere, the gas velocity exiting\nthe rear end during a space phart would be no\nfaster than that of a phart here on earth. Other \nthan a slight lift to release the gas, no actual motion\nwould be detected by an observer during the phart.\n\nOther astronauts in the general vicinity would, however,\nmove away from the immediate area unless restrained\nby the elaborate seat belt arrangements during docking\nor manuvers.\n\nThe real problem which you failed to ask about is the \ninternal climate within a space suit. What happens \ninside there during pharting? Well, I must admit that in\na confined space there is nothing so disturbing as a\nstring of continual pharts. Your helmet visor becomes \nclouded and cleared again by the suit conditioning \nsystem, or external support system equipment. Luckily\nthe pressurized suit support systems are designed to\nhandle these occasional bursts of methane gas.