Well, I did some research and ended up mixing 1/2 tsp of raw Manuka honey and with a drop of spike lavender. My dog took one sniff of the lavender and turned his head. So. I next put the honey/ lavender mix between 2 chicken treats and he ate it up! Slept like a rock that night too! His coughing stopping after that. It came back the next night so I repeated the honey/ spike lavender again. So far no coughing. Pretty amazing! Just wanted to share my story.