First, when brake fluid burns, it produces a white smoke and has a very acrid smell.
I found cigarette-like smoke near passenger's side front bumper -- underneath the battery. What is electrical underneath the battery? Could this problem be the battery ground wire?
In front of and under the battery area is the headlight wiring harness and blinker/parking light wiring. If you have an aftermarket Plasma/Lazer/Bling Blue headlights (example: the ones with Japanese written all over the package that you get on eBay or your local tuner shop), they can cause the headlight wiring harness to burn up, creating a burning electrical wire smell and smoke. They are something like 80 or 100 watts instead of the 55 watts (I think) of the regular OEM style headlights. The increased wattage can fry the wiring harness. You may also have frayed insulation on one of the wires, causing something to heat up and/or melt, creating the smell and smoke.
Just a thought.
*quick edit* 9005 headlights that are modified/customized to fit 9006 sockets and harnesses could also burn out the headlight wiring harness.