The fire bell is never inhibited automatically on any aircraft that I know of. It can be inhibited by the crew, but other visual warnings remain.
Engine fire warning right up to V1 is a class A1 reason to reject the takeoff. If you have an uncontrolled fire on the aircraft (and every fire has the potential to be uncontrolled), you have about 3 to 4 minutes to destruction.
Reject! (But not at or above V1)!
Regards,
Old Smokey