
Hi ceejay,
sorry about your girl, hopefully she'll be over the worst symptoms soon and at least you're aware of the need to keep her isolated from other dogs and doggy areas. Remember dogs suffering with KC should have minimal exercise and preferably no excitement - they need to be kept rested and calm.
I'm with Lea on the situation with your grandson's cold - it sounds pretty much the norm for most folks right now and much more likely than exposure to KC :)
AFAIK kennel cough is not transmitted to humans, regardless of age just as our common cold and flu viruses are not transmitted to our dogs
Best wishes,
Teri :)