Freshly cooked rice smells different than the "expired" ones. You can give it a smell after it has completely cold, if after a few days it starts to small odd,

Freshly cooked rice smells different than the "expired" ones. You can give it a smell after it has completely cold, if after a few days it starts to small odd, then probably don't eat it. A rice cooker can usually finish cooking in less than 30 minutes completely automatically, so it's not really worth the risk anyway.