Hi, I'm Dr. Peter. Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply ASAP.
Hello, again, my name is***** will do my best to help you today. First I need to ask you a few questions so that I can be well informed and give you the best advice.
1- Is he hacking/gagging?
2- Is he eating and drinking?
3- How long has this been going on?
1- The sound is mainly coming from the nostrils?
2- How long has this been going on?