Baytril isn't the best choice for pasteurella since most bacteria are becoming resistant to Baytril. If you have the tabs, there isn't much you can do to cover that taste (liver). You can try banana or a favorite type of baby food. Ask your vet if you can exchange the tabs for the injectable. If you can do sub-q injections, Baytril has a better chance of working when injected. If you can't do injections, your vet or a pharmacy should be able to flavor the injectable version and use it as an oral drug (I have used either avian flavoring or FlavoRX). Just for info, if it's a confirmed case of pasteurella, Azithromycin is the current drug of choice. Another choice is a newer floroquinolone called Zeniquin (same family as Baytril but without resistance issues...yet) as well as injectable drugs Convenia and Penicillin. Just a few options to discuss with your vet.
Randy