Why would your cat be sneezing drooling and not eating?

my young cat is drooling alot and sneezes and wont eat. i have other cats and they are ok. Cats like humans get colds and flus - Cat colds are very contagious and interestingly, cats are more susceptible to colds in the summer time. You may need to call the VET as the colds can be fatal if infection sets in and are extremely contagious to other cats