Pollen filter filters air going into the car, air filter filters air going into the engine.
The pollen filter is found behind the glove box. Open it, press the sides of the glove box inwards and the whole box will open further.
The pollen filter is then visible, held in by two clips.
As long as it is there every thing should be okay.
Perhaps when you are in a traffic queue you could put the air flow on recycle instead of drawing the air in from outside.
Hope this helps.
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