LG AS60GDPV0 Owner's Manual page 16

Back View
Smart Diagnosis Part
In the event of a malfunction or failure,
you can use the Smart Diagnosis
option to check the product condition.
(See Smart functions.)
PM 1.0 (super ultra-fine dust)
sensor
It detects the concentration of dust.
16
Smell (Gas) Sensor
It detects a smell (gas).
filter
It removes allergic materials, yellow
dust/ultra-fine dust, possible sources
of sick house syndrome, smog and
other odor.