PC smells like its burning?

Recently my pc has been smelling like burnt peanut butter and no I haven't eaten peanut related in a month. The smell is really bad but for some reason there hasn't been an signs of damaged components- no burned marks or smoke is coming out of my computer. I can't say that is the probably just some dust burning because I have never smelled burnt dust. I moved outlets just to make sure but the smell persists. I removed each component out that includes the/psu/ gpu/ hhd/ssd except the for the ram/mobo/cpu and smelled them, nothing. I'm starting to think whether it's my pc or it's my keyboard so after this I'm gonna start my pc with a different keyboard. Im sniffing each component in my pc to find a concentrated source but no luck. PC works perfectly fine I checked the temperatures of both major computers CPU/gpu and they both idle at normal temperatures and load at normal as well. I've also dusted the whole computer just to make sure it wasn't just dust clogging something up. The smell also gets worse if the computer is under load, but I'm not too sure if it's bc I left it on for a long period of time. Has anyone else had this problem?