Thank you for your post!
Although I would suppose acid reflux can cause this - my top differential would be dental disease (tooth disease)
Having your veterinarian evaluate the teeth and if this is the problem - considering a dental cleaning as well as antibiotics would likely be the recommendation.
_____________________________________________________________________Please click "ACCEPT" if the information I have provided has been of help so I receive credit for my work. Bonuses are always welcome and appreciated. Thank you.The above is given for information only. Although I am a licensed veterinarian, I cannot legally prescribe medicines or diagnose your pet's condition without performing a physical exam. If you have concerns about your pet I would highly advise contacting your regular veterinarian.