Don't ya just hate it when...

Some piece of electronic equipment in a room full of the stuff starts to make a smell, and you can't identify which it is?

Something, somewhere in my home office has blown a capacitor. As I type this, my nostrils are flaring at the horrid pungent smell that electrolytic capacitors give out.

What is really frustrating is that I can *only* smell it when I am sitting at a typing position. If I stick my nose close to any of the equipment, I cannot smell it. As far as I can tell, it's not the server, the monitor, the PC, the other monitor, either of the laptops, the empeg, either of the UPSs, any of the PC speakers, the network switch, the KVM, either of the printers, any of the wall-warts, the cable modem or the (unplugged) Nortel Contivity box.

Where the fsck is it coming from. It's driving me nuts. If anyone knows, please tell me.