The short answer
Check Refrigerated Food First
A power outage stops your refrigerator and freezer. If the power was off for several hours, perishable items like meat, dairy, and leftovers can spoil and release strong odors. The smell can linger even after you throw the food away, especially if juices soaked into shelves or the interior lining.
Open the fridge and freezer doors and inspect everything. Discard any food that feels warm or has an off smell. Wipe down all surfaces with a mix of water and baking soda, and leave the doors open to air out. If the odor persists, the insulation inside the appliance may have absorbed the smell and may need professional cleaning.
Look for Water Damage from a Sump Pump
If your home has a sump pump in the basement or crawl space, a power outage can stop it from working. Without power, groundwater can rise and flood the area, leaving dampness and a musty smell. Even a small amount of standing water can cause odors as it sits.
Check your basement, crawl space, or under-house area for any signs of water. Look for damp spots, wet insulation, or puddles. If you find water, you need to remove it quickly and dry the area to prevent mold. This may require a pump and dehumidifier, which you can rent or hire a pro to handle.
- Inspect the sump pump pit for standing water
- Feel carpets and baseboards for dampness
- Check the water heater and pipes for leaks
- Look for wet insulation or wood under the house
- Use a flashlight to see into dark corners
Smell from Electrical Overheating
A burning or metallic smell after a power outage can come from electrical components. When power returns, surge protectors, outlets, or wiring may overheat if they were damaged by a surge. This smell is different from food spoilage and should be taken seriously.
If you smell something like burning plastic or metal, turn off the main breaker and call an electrician. Do not ignore it, as it could indicate a fire hazard. Also check your appliances, especially the refrigerator and freezer motors, which may have strained during the outage.
Dry Out Damp Areas Quickly
Moisture from a flooded basement or crawl space can lead to mold, which has a distinct earthy smell. Mold can start growing within 24 to 48 hours, so you need to act fast. Remove standing water with a wet vacuum or pump, then use fans and dehumidifiers to dry the space.
For large areas, consider professional help. Water damage pros have specialized equipment for extraction and structural drying. They can also check for hidden moisture in walls and under floors. If you live in Caldwell, Idaho, with its semi-arid climate with cold winters and hot dry summers, drying out a wet area is still important to prevent mold.
- Use a wet/dry vacuum to remove standing water
- Run a dehumidifier for several days
- Set up fans to circulate air
- Remove wet carpets and padding
- Check for hidden moisture with a moisture meter
When to Call in the Pros
If you cannot find the source of the smell, or if you suspect water damage in hidden areas, it may be time to call local water damage pros. They can inspect your home, find leaks, and dry out structures. They also have tools like moisture mapping to locate damp spots behind walls.
For sump pump failures, a plumber can repair or replace the pump. For electrical smells, an electrician is the right person. If you have significant water damage, a professional restoration service can handle extraction, drying, and repairs. Policies vary, and your insurer decides what is covered.
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Call Now (208) 729-2441Frequently asked questions
How long does food last in a fridge during a power outage?
A full refrigerator keeps food cold for about 4 hours, and a full freezer for 48 hours, if the doors stay closed. After that, perishable items like meat and dairy should be thrown out. When in doubt, throw it out to avoid foodborne illness.
Can a power outage cause a sewage smell?
Yes. If your home uses a septic system or a sewage ejector pump, a power outage can stop the pump, causing waste to back up and create a strong odor. Check your basement or utility room for any overflow and call a plumber if needed.
What if the smell is from a dead animal?
A dead animal, such as a rodent, can cause a foul odor after a power outage if it got trapped in a wall or attic. The smell will fade as the animal dries, but you may need to locate and remove it. A pest control professional can help find and dispose of it safely.