Hey,
So here is the update on the filter. It arrived today.
Its a big one ... but it only cost me €65. Thats about $80 - $90 I think.
I can already smell the difference. Those Odorsok filters are really bad... I can smell nothing on the vent right now. Not a bit and even if there was a bit of a smell my negative ion generator takes care of the rest. Thanks a million for the advise bigsby. I can now close the window and not worry about leaving all of that nice warm air out ! I attached some photos. Ill have the extractor come on, at a slow speed, 15 minutes out of every hour and see how it goes.

Hope you enjoy the pics

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Take care all