Our 11 year old Siamese female became nasally congested, with yellow mucus discharge from one nostril. Took her to the vet, who said that her temperature was normal. So was her blood work. She can smell enough to eat strongly smelling cat food, and she is drinking adequately. The vet has given her two injections of antibiotic over three weeks, but the congestion continued. The vet thinks that there is a foreign body up the nostril with the discharge and wants us to get her nostril scoped. I can't see how a foreign body can cause the flu-like congestion. Is this true? Any other ideas? Thanks very much.