When in doubt, throw it out.
Your refrigerator will keep food safe for up to 4 hours during a power outage. Discard refrigerated perishable food such as meat, poultry, fish, eggs, and leftovers after 4 hours without power.
After a power outage never taste food to determine its safety.
MORE INFO: https://www.foodsafety.gov/food-safety-charts/food-safety-during-power-outage