Every now and then, the fan will blow snow inside my Micra.
Interior covered in snow: dash, seats, doors, myself.

And a few times every winter, I get the fog-up : in less than 20 seconds, all windows turn white. Opaque.
I have 20 seconds to turn on the hasards and find a spot to stop the car.

I turn the fan OFF before I start the engine, remove all snow from the hood and grid. I start the fan only once the car got moving. Still, I get snow inside.
Only once the engine is hot do I turn the heat up (That makes for a fun first 15 minutes at minus 20!).
AC on too. No, the blower ins't set to recirculation.

Has anyone heard of that before?

Thanks!