Windows fogging up in cold weather

[FourPointEight-is]

I’m having some issues with condensation on the inside windows, but this only happens on cold days (45 degrees and lower).

I’ve to the A/C set to “auto”, the snowflake is “on”, and the recirc is on the “circle with arrows” mode. After a while all the windows start fogging up.

If I turn ON recirculating (i.e. allow outside air into cabin) then the fogging reduces and eventually disappears. I don’t like letting outside air in because of the awful smell and exhaust fumes from other vehicles. I don’t allow this in my other bmws an they don’t seem to have any trouble.

I’ve replaced the cabin air filter recently, I didn’t notice any issues. As far as I can see no drainage holes from above are blocked.

What gives? Car is a 2005 E53 4.8is