Will my engine run on 5 cylinders

[white lancer]

Will the 3.0 inline 6 run on 5 cylinders? I have a missfire on #4 and have ordered a new coil pack which should be here today. I was led to believe that if the car detects a missfire it cuts off the fuel to the cyclinder injector to stop any damage to other parts of the car?

I was having a discussion with a mate last night and he was saying that you should not drive the car as it will be putting unburnt fuel into the exhaust system which can damage the CAT. also that the engine management system will detect that the exhaust gasses are very rich and will back off the injectors to all the cylinders making the car run very lean which can lead to overheating? he said I may also damage the O2 sensors?

The car runs a little lumpy on tick over but once driving you can hardly tell that it is running on 5 cylinders