[Nikko's_human]

Every time Nikko drinks water, he coughs or sneezes. He has done this ever since we brought him home. I have been reading up on here about collapsing tracheas and I am concerned my baby might have this. He never coughs when he eats, only after he drinks water. He'll cough or sneeze once or twice. My fiance thinks its just because he guzzles the water down greedily and he thinks I am being paranoid. Am I being paranoid or should I be concerned about this? How can i get him tested for this? He never has coughing fits like some of the other threads on here say is a symptom of this. Any advice on this would be greatly appreciated.