Over the last few days I have noticed that after switching off the engine, there is a continuing noise like a fan running in the engine compartment, accompanied by a funny smell, and i can feel air (cool) blowing out of the front grill. This goes on for a good couple of minutes. I have only had the car about 6 weeks, and it's just started doing it the last few days.

I've read some posts that suggest this might be the DPF regenerating. This has however happened for the last 3 or 4 consecutive days, at both ends of my journey to/from work (abut 17 miles, mostly motorway)

Is this a DPF regen? Should it eb happening so often? Or is it something else? Most importantly, is it something I need to be worried about or do something about, or is it normal

Any input gratefully received