Okay so I had some spare time on a boring Friday, decided to check the Cabin filters since I noticed a slight smell of dust coming from the Air Conditioner, a total DIY! BUT the results were rather disappointing or should I say, shocking.
These filters are situated behind the dashboard compartment.

Opened it, the little filter was a bit dirty

Went further on to take out the main filters.

You just have to pull them out

Now to my surprise, where there should have been a filter, there was no filter at all ! Instead, just a pair of dirty plastic filter holders

BOTH of the filters missing !

So yeah, just cleaned the little thingy and put it all back in.

I'm going to Honda tomorrow morning, I'll make sure they have a good explanation for this -.-