For those who can’t stifle a burp before scurrying out of earshot, it’s worth knowing there’s something worse than letting that belch burst forth in polite company. Being unable to burp is not a good thing, researchers from Texas Tech University Health Sciences Center have found, not least as it means you are more likely to do something more embarrassing: fart. The inability to burp is known as retrograde cricopharyngeus dysfunction or R-CPD, referring to “the cricopharyngeal muscle’s inability to relax to allow the retrograde passage of gas,” according to the team. In a survey published in Ne…