Belches and Farts

DORA: What are belches and farts?
DORA: Brrrrrrrrrrrrrrrrrrrrrrrrrrrrrupppppppppppppp! Sorry!
WENDELL: That was gas! Belches and farts -- are both caused by escaping gases! But they're different kinds of gases that escape from different places!

DORA: Where do the gases inside me come from?
WENDELL: You're always swallowing them. And your body is always making them.
DORA: I am? It is? How is that possible?
WENDELL: When you were a baby, just like every other baby, you probably cried a lot and sucked down lots of milk. You know what else you swallowed? An invisible gas called air! And you know what your loving parents had to do? Pat you over and over again on the back to "burp" you. Now, if you gobble down your food, you'd be surprised how much air you can swallow while you're gobbling. If you drink soda pop or seltzer -- with every lovely bubble you're swallowing another gas -- carbon dioxide gas or CO2. Clearly, all of these gases have to go somewhere!

DORA: Where do the gases go?
WENDELL: Burps are the sounds you make when extra gas quickly escapes from your stomach, up through your esophagus and mouth. Farts, on the other hand, are the sounds and smells of extra gas escaping down your large intestine and out through your anus. That gas can travel through your body in just 30 to 45 minutes. Burps travel up and out even faster!

DORA: How much gas do I have inside of me?
WENDELL: Lots. In fact, you'd hate to find out how much. You have to get rid of it somehow. So you probably pass the equivalent of a quart of both odorless and odorful gases a day!
DORA: Omigod! I might explode!
WENDELL: Hardly. You don't get rid it of it all at once. In fact, humans should probably come with this -- WARNING: you probably belch or toot off at least 10-15 times a day!
DORA: Golly.