No, you're not dumb for having concerns about touching the metal parts of an electric appliance after it has been unplugged. It's actually a sensible safety precaution to be cautious around electrical equipment. However, I can provide you with some information to help alleviate your fears.
When you unplug an electric appliance, the power supply to that appliance is disconnected. This means that there is no continuous flow of electricity to the metal parts of the appliance. In most cases, the metal parts will not "store" electricity or retain any dangerous charge that can shock you.
However, it's still important to exercise caution and follow basic safety practices when handling electrical appliances:
Wait a few moments: After unplugging an appliance, it's a good idea to wait for a short period before touching the metal parts, just to allow any residual charge to dissipate. This is particularly relevant for appliances with capacitors, which can hold a charge for a brief period even after being unplugged.
Handle with dry hands: Ensure that your hands are dry when touching the metal parts of an appliance. Moisture can increase the risk of electric shock, so it's best to dry your hands thoroughly before handling any electrical equipment.
Avoid damaged or exposed wires: If you notice any damage or exposed wires on an appliance, refrain from touching it and have it inspected or repaired by a qualified professional. Damaged wiring can increase the risk of electrical shock.
Use proper insulation: If you're still concerned about potential electrical charges, you can wear insulating gloves when handling electrical appliances. However, this is typically unnecessary for household appliances.
Remember, while it's essential to be cautious around electricity, most household appliances are designed with safety measures in place to minimize the risk of electric shock. If you have any specific concerns or questions about the safety of a particular appliance, it's always a good idea to consult the manufacturer's instructions or contact a professional electrician for advice.