"Words do have the power to disgust and repulse, though—that, at least, has been demonstrated in scholarly investigations. Natasha Fedotova, a Ph.D. student studying psychology at the University of Pennsylvania, recently conducted research examining the extent to which individuals connect the properties of an especially repellent thing to the word that represents it. “For instance,” she says, “the word rat, which stands for a disgusting animal, can contaminate an edible object [such as water] if the two touch. This result cannot be explained solely in terms of the tendency of the word to act as a reminder of the disgusting entity because the effect depends on direct physical contact with the word.” Put another way, if you serve people who are grossed out by rats Big Macs on plates that have the word rat written on them, some people will be less likely to want to eat the portion of the burger that touched the word. Humans, in these instances, go so far as to treat gross-out words “as though they can transfer negative properties through physical contact,” says Fedotova." Word aversion: Hate moist? Slacks? Crevice? Why do people hate words? - Slate Magazine