I'm with Kon on the wiring being a possible cause.
Remove the lower trim on the drivers side (the one where your knees are) and inspect the wiring behind it. If something has shorted out in there it can be slowly melting the insulation around the wires. Have a look and let us know if any of the wires, connectors or other components are showing signs of heat.
On my trackcar I had the same scenario where one of the looms had rubbed through and was arc'ing off the steering column. It melted my turbo timer loom before I realised what was happening.
I would not recommend driving the car until you get to the bottom of whatever it is causing the smoke and smell. A dash fire can be highly dangerous.
Or you could have stood in something but it sounds unlikely.
Jay