Car shoots in the morning

Okay, that usually is called backfiring.
Is this backfire back out the intake manifold, or out the exhaust tailpipe?
If out the tailpipe it could be due to a fuel injector dripping gasoline when the engine is off and building up some gas in one cylinder, then when you go to start the engine or immediately after starting pow, pow, pow until it burns off that excess gas.
I would remove each spark plug after the engine has sat overnite and smell for gas on any spark plug, then if found try a fuel injector cleaning or replace that one fuel injector. Or you could see if there is a misfire code for a single cylinder, then either try a fuel injector cleaning or replace the one fuel injector.
If the backfire is back out the intake manifold instead, let me know.
Either way you should retrieve any trouble codes just in case maybe it is just a failing sensor, etc.?

Is it possible to continue using the car without changing the injector nozzle. Does it have any side effect if not changed immediately? Thank you for your prompt response. So I can know if I can go on with the pow sound.

You could ignore it for now, but you should at least try some fuel injector cleaner added to the gas tank.
If though it is a fuel injector leaking, eventually the gas will get past the piston rings and reach the oil pan and dilute the motor oil.

Thanks so much, I sincerely appreciate your response.

You are welcome.