Cats may have different reactions to the smell of mustard. First of all, mustard has a strong pungent smell, and cats have a very sensitive sense of smell, so they may feel uncomfortable with the smell of mustard and may sneeze or shed tears.

Secondly, if your cat accidentally eats mustard, it may have a more serious reaction. Mustard is an irritating food. Cats may cry, sneeze, vomit, and salivate after eating mustard. In addition, because mustard is too irritating, it will cause a burning sensation in the cat's esophagus and gastrointestinal tract, causing the cat's voice to become hoarse. It will also affect the flora in the cat's gastrointestinal tract, causing cats to suffer from indigestion, loss of appetite, diarrhea, etc.