Burps and Burping
Worryingly close to farting!

The average person burps about fifteen times a day—generally a little more than they fart. Since belching is just another way of breaking wind...

Burps arise faster, though, because it takes at least thirty minutes for the gas to travel through your body and out your ass. And burps are more likely to smell like what you've eaten, unlike the noxious odor you get when the gas comes from the ass.

Most gas comes from swallowed air (the rest from fermentation of undigested food), and since burps come from the same source, the more you burp, the less you fart.