No, it is never safe to continue using a wall electrical outlet after it has produced a significant spark, flash, or popping sound until the root cause has been thoroughly diagnosed and professionally repaired. A sparking event is a direct symptom of internal mechanical failure, such as loose terminal screw connections, worn contact springs that fail to grip plug prongs tightly, or an active short circuit. Continuing to plug devices into a compromised outlet exposes you to severe electric shock hazards and greatly increases the risk of igniting an electrical fire inside the wall box. You can troubleshoot electrical faults safely by keeping appliances unplugged and immediately isolating power at your home electrical service panel. You can verify that your corrective action is successful when shutting off the breaker, inspecting the wiring, and replacing the damaged receptacle ensures that you can plug in devices safely without any recurrence of sparks.
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