I Have A Dry Cough That Has Been Going On

I have a dry cough that has been going on for over a year, and I had a chest xray and it was ok. I went to see an ENT and his put a tube down my throat and took a picture and said my tonsils and throat looked fine. I have some reflux from my stomach sometimes but have tried pepto and tums and Pepcid, etc. to see if the cough is from acid reflux. Now I have a smell like odor coming up into my throat and mouth and I don't want to have bad breath. Any suggestions? I have not been diagnosed with acid reflux, but I had my gallbladder removed.... and also I bloat whenever I eat... does any of this sound like something I can fix easily. Thank you much!