just keep the dog hydrated. kennel cough is like a cold for a dog. the coughing will sound horrible. There is a chance a secondary infection could occur. If you go the vet they will give you anti-biotics to prevent this but it will not do anything for the cough.
But the anti-biotics do help. My poodle coughed like crazy till I got her on anti-biotics. It stressed her out so much she had a small seizure. I am all for anti-biotics for kennel cough. It was horrible having to watch her wake every couple hours thru the night coughing.
puppielove....i have been watching your questions and all of them are either common sense or something you have not researched. You need to take a chill pill and lay off the caffine. its somewhat annoying