smell from fan

Just got my car back after 5 weeks! The reason it went in was that I snapped a glow plug. Rather than drilling and pulling out, I opted to have the head removed. My reasons for this were:- 1. Paranoia (not wanting to drill through a coolant channel) 2. To see what state the internals were in...

hi guys I have a e220cdi aventgard 2007 merc I am getting a slight smell when the fan is tuned on for heating or cooling, I think the air filters need cleaning or replacing can any one guide me where the air filter or filters are located and how to access them pls. I have located the pollen...