Welcome to Healthcaremagic.
I would first ask you to get vaccinated if you or your dog is not.
The smelly fluid if oozing it could be a sign of infection , I would suggest you to apply antibacterial cream like BACTROBAN
over the wound and observe the wound for any discharge.
The Ointment would surely reduce the infection if present if not it will prevent one.
Wish you good health.