Can creutzfeldt jakob disease be transmitted through saliva? Do spouses catch it?

No. Cjd also known as mad cow disease is considered a prion disease. Prions are a type of infectious protein. Also, cjd has a very long incubation period (50 years) so it is difficult to study. It is believed that it is spread through ingestion of infected protein mainly beef organs. So far studies suggest that it is not transmitted via blood or saliva.
No. According to the natinal institute of nerological disease you can not get it from casual contact...You need to touch brain tissue.