Copenhagen researchers suggest in the New Zealand Medical Journal that air passengers should release the gas or risk painful medical consequences! Flying increases flatulence due to changes in pressure inside the cabin. The researchers reviewed published literature on the topic, and suggest holding back may increase the risk of diverticular disease. A simple "excuse me" may not be enough in the close quarters of the economy section, and a trip to the lavatory may be prevented by air turbulence.
PositiveTip: While humorous, passengers prone to gas could take preventative measures such as eating fewer beans and other fiber-rich foods.