Smoke out of left side hood, fishy smell, whirring sound, even after shut off.

Do not rely on the codes, what the CK ENG LT program is for is to protect the catalytic convertor and the catalytic convertor is to protect the environment. Driving a short distance smoke and a swirl sound and fishy smell this is a coolant leak, a pressure test of the cooling system is the best way to approach the situation

Fishy smell is very old coolant. Smoke was probably a coolant leak so don't drive it and get it in to a shop where they can visually inspect and/or pressure test the cooling system and make repairs.