Neten kutatva egy 3-as leírásban találtam:
"Note: The filter may produce odors when it absorbs excessive harmful gases. It is recommended to store the filter in a place with good lighting and ventilation to improve the activity of the activated carbon and restore its particle adsorption capacity. Please replace the filter when its recommended service life is due."
Ez most akkor mit jelent pontosan, nem sikerült "összeraknom"...