
This morning on the way to work I suddenly started getting smokey stuff pouring out the vents.

I turned the aircon off and the smoke stopped.
Is this anything to be worried about?
I don't think it was fire smoke. It was more like dry ice smoke.
Is this an indication that my aircon needs re-gassing?
I've never had it re-filled in the five years I've had it and it's the only car I've owned that has had aircon.