Hi from Maui, sorry your Kona is having problems.
You should have a vet check it out, it could be kennel cough, which would need medication. It could also be a number of other things, such as allergies, or reverse sneezing, or collapsed trachea.
Here are links to threads that may have some similar situations, but honestly your vet is best to diagnose and treat whatever it is. Good luck, and keep us posted.
http://www.yorkietalk.com/forums/die...d-trachea.html http://www.yorkietalk.com/forums/sic...2-weezing.html