LG SXS - Manual (Page 17)

Operation
17
Deodorizer (Applicable to some models only)
This system efficiently absorbs strong odors
by using the optical catalyst. This system
does hot have any affect on stored food.
Since it is installed already installed onto the cool air intake duct from the from
the refrigerator compartment, you need no separate installation.
Please use closed containers to store food with pungent odors.
Otherwise, this oder can be absorbed by other food in the compartment.
How to use the
deodorizing
system