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The dinner is done. Get it out of the oven!

That burning smell can come from several sources. You will have to visually look for any leaks. Oil leaks, power steering fluid leaks, transmission fluid leaks can get onto hot parts like the exhaust and create a burning smell.

You can also use your nose to try and locate the source of the smell.

If it has a uniquely burning plastic smell, this could be an electrical issue. If you have electrical wires overheating, you can have a serious problem that needs to be checked right away.