badcaps.net said:

Strange odor immerging from your case. (Yes, cooking capacitors DO stink!!)

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Umm... my mac always made an atticy smell when in use. I thought nothing of it-it always had that sort of smell, even when not in use. That was the smell of the person who gave it to me, so I thought. I did notice that it smelt more when running, but I just put it down to "the smell comes out more when it's warm".

I would not say that it stank, but that could be a sign. Maybe PSU capacitors aren't as smelly .