Charlie has been reverse sneezing a lot lately. He use to do it when he would drink water sometimes but lately its a lot all of a sudden. I did watch videos of the difference in reverse sneezing and collapsed trachea and it does seem like a reverse sneeze more than the other. Its trough his nose. Could he have a cold causing this?? I am going to take him to the vet today because I hate hearing it. It stresses me out.