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I agree with this, it shouldn’t sit around but if you wait like 20-30 minutes after cooking it’s 👌
from a food safety management standpoint, throw any food away that has been left out at room temp for 4 hours or more. If you don't know how long it's been out and it's not a specific very hot or very cold temp, it'd be best to toss it too. Food bacteria is not a joke and it can shut down the body fast. 
Noodles and Rice are ESPECIALLY dangerous to leave out at room temp. But generally speaking, even restaurants can hold food outside out a cooler or a heater for up to 4 hours before it has to be disposed of. (Though a lot will only do 2 to be safe)