odorless fumes from the AC vent
 

Hi,

After running the AC for a couple of minutes, I get odorless fumes from
the AC vent of the car. It does not condense in my hand when I place my
hand in front of the vents.

Is it just moisture? Or AC refrigerant that leaks into air stream?

It was raining and I'm at Chicago suburbs.

My car is 1996 civic LX (125,000 Mi).

Thanks in advance.
Jay K