Source of smell is (pe)bcak 100% of time.
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pulsar lava
sweet yoke
Maybe you should instead clean up your room. The smell may not have came from the PC. Just saying
pulsar lava
OK, i was jk about the smell being you B.O. The smell cant be everywere so you need to pin point it, you say its not the GPU, ok, so you can scratch the thermal padding getting warmed up and getting cooked. Do you have a pump, if so, when was the last time you top up the pump, water evaporates as time goes by so the smell could be same as a car with no water in the radiator. When did you replaced the CPU thermal paste?