Last year, my pug
spontaneous begin inverted/reverse sneezing
. I was told to not worry about it. Shortly after, maybe a month or so, she developed a runny nose with discharge. It's mostly always clear. She was taken to the vet and given antihistamines, which didn't really do much. Then a litter after the runny nose appeared, she started coughing. It was a dry, non-productive cough, almost like a "cack" sound. She was given doxycycline (100 mg) tablets, for kennel cough.