Very brief white smoke.

While I was driving home I noticed a very brief puff of white
smoke coming out of the vin number area on dash board
near a speaker the mini one. It stopped and I smelt a very
brief electrical smell. I drove it some more and did not
smell it again or see it again. Could of the mini speaker
went out? Or what. Drivers side dash near vin number area
and not the vents. Also it seemed brief.