We’ ve recently torn down our old fence and replaced it with a new redwood fence. Several days ago, our male dog began "coughing", which sounded like he was trying to cough up a furball. Doing research tonight on the internet, it appears that this could be kennel cough caused by excess dust. My husband and I read that along with antibiotics, they often give cough medicine. Does anyone know the type? Is it in liquid or pill form?