My 98 Taurus hazard lights dont work but the other lights all work? Could it be a blown fuse?

Bad fuse
bad switch
bad flasher

Use a wiring diagram to map out the circuit and use a meter to test connections and components.

On your '98 Taurus, the hazard and turn signals both are activated by the multifunction switch. Both use the same electronic flasher, so if the turn signals work, the flasher module should be okay. The main culprit in this situation is either operator error or a bad multifunction switch.

-Rod