Cats just like humans sneeze because of irritants that can get into their nasal passages. Feline sneezing can also happen by secretions in the nose. And since cats can't blow their noses on tissue like humans when they do sneeze its best to clear away: they will sneeze everything out!
   There are many causes for sneezing in cats, some of which are similar to humans: viral infection, allergies, bacteria or even foreign objects in the nose. Please don't use any decongestants or nasal sprays made for humans on your cats and have your sneezing feline examined by a vet.
   If your cat's sneeze is clear and watery this is normal, however if the discharge is green, yellow or bloody your cat will need to be treated by a vet for possible infection.