Don’t wait for the smell to go away. Overheating can continue inside a wall even after the smell fades.
What usually causes this?
Overheating outlet or switch
Loose connections or worn devices create heat that burns insulation.
Overloaded circuit
Too much load heats wires and connections.
Light fixture overheating
Bulbs over the fixture's rated wattage or poor fixture wiring.
Appliance failure
Motors, heating elements and cords can overheat.
Panel or breaker problem
Loose lugs or failing breakers heat up in the panel.
What you can safely check
These details help an electrician find the cause faster. Look and listen only — do not remove covers or touch wiring.
- Where the smell is strongest
- Warm outlets, switches, fixtures or cover plates
- Discoloration or melted plastic
- What was running when it started
- Whether turning off a circuit stops the smell
Warning signs that need a professional
- Smoke
- Discolored outlets or switches
- Hot panel
- Crackling or buzzing
- Flickering lights
When should you call an electrician?
Call an electrician immediately for any burning electrical smell you can't trace to a clearly failing appliance. Even if the smell stops, the damaged connection or device needs to be found and repaired.
Services that fix this problem
Emergency Electrician
Urgent help for burning smells, sparking, hot panels, water-exposed wiring and sudden loss of power at home.
Electrical Repair
Diagnosis and repair of dead circuits, failing outlets and switches, tripping breakers and other everyday electrical faults in your home.
Electrical Troubleshooting
Systematic testing to find the cause of intermittent power loss, tripping, flickering and other electrical faults that aren't obvious.
Electrical Panel Services
Repairs, inspections and maintenance for breaker panels — loose connections, damaged breakers, labeling and capacity checks.
Related electrical problems
Frequently asked questions
Often like hot or burning plastic, but some people describe a fishy odor from overheating components.
If there's smoke, flames or the smell is strong and spreading, call 911. Otherwise, turn off the circuit and call an electrician.
New heating appliances can smell briefly on first use. A persistent smell or one from outlets or walls is different and should be checked.