You searched for: “borborygamiphobia
borborygamiphobia (s) (noun), borborygamiphobias (pl)
A dread that other people will hear the rumbling, gurgling, etc. in his or her stomach or intestines that are produced by gas in the alimentary canal and which are audible at a distance: Some individuals who have borborygamiphobia are so afraid that others will hear these sounds that they become social phobics and avoid public gatherings or even being around others, especially after eating.