Summarize this article in one sentence.
The overheating of aluminum wiring can be felt through its connection points with your walls. Touch the surface of the plate covers on your outlets and switches, which should feel cool or neutral. If they are warm, it may be a sign of a dangerous electrical issue. Overheated aluminum wiring can cause materials inside your walls to burn, causing strange smells, particularly at connection points. See if any notable odors linger around electrical outlets and light switches. Commonly, this is normally the smell of burning plastic. Aluminum wiring can cause connectivity problems, which may result in problems with your lighting. Take note if your lights flicker faintly or seem to be especially bright. Try changing the light bulb to see if the problem persists. Indications of faulty aluminum wiring should also be considered a fire warning and treated accordingly. Contact an electrician at the first sign of overheating to have your wiring tested. If you are renting a property, contact your landlord or superintendent immediately to alert them of the issue.

Summary:
Feel the temperature of the plates on your electrical outlets or switches. Check for strange odors around your outlets or switches. Take note of flickering or glaring lights and eliminate possible causes. Contact an electrician right away if you notice these problems.