Are Spies Trained To Conceal Their Farts

Are spies trained to conceal their farts? I think they must be. If they're not then the littlest slip up could jeapordize their whole mission. Imagine if a spy is doing clandestine work in Russia and they are in the Kremlin looking through old Cold War files when all of a sudden, toot, a tiny little fart slips. Now security is all over them and the mission is a failure. I think there is no doubt that there is training to conceal flatulence for our spies.