my dogs all had the sneezes, followed each other with an incubation time of around 3 days, it lasted about 4 days, they were a little lethargic but otherwise fine. some had had kennel cough vaccine and some hadnt, made no difference.
A few years ago,all my dogs,and then cats,had the sneezes-nothing else,fit and well,that lasted about 4 days,I wondered if there was some kind of allergen in the air,ormaybe some household thing I d used.