There were two fosters that came with kennel cough. One was recovering the other was getting pretty bad. I didn't limit the dogs' exposures to my own two dogs. They were here a week each and slept inside with my dogs in the same room, played during the day together. My own dogs aren't vaccinated against kennel cough and didn't catch it. I was told if your own dogs are healthy with good immune system, there shouldn't be an issue. I didn't do anything extra for the kennel cough sanitation wise other than cleaning the fosters' beds after they left.
Not sure if this helped but I've always made sure the air circulation in and out of the house is good. That is regardless of kennel cough.