Good point

but jokes apart.. i have 2 one in my bedroom and one in my moms. Mom never closes the
windows of her room(even runs the
ac with widows open

) and her purifier chokes up (red light) every month and even if the light doesnt show , while washing one can see the amount of soot/dust/ carbon (its awful to look at and satisfying at the same time that the purifier is doing a fab job) had it been the hepa one (i had
mi ones before bakwaas absolutely) i would have been shelling out 3k every 2 months.only thing good about them was the pm reading/meter.
As for my room, its always sealed till my ac conked off recently when i had to let the windows open for few days till new ac came and thats the time when the red light came up. But still i used to clean it every 2 months and it used to catch a lot of crap. Soi think if the purifier lights up faster in (relatively)open areas compared to rooms that are always closed.
Frankly i never let it reach a stage that it lights up(infact crackling sound is an indiacator that it needs to be cleaned) and clean it irrespective at scheduled intervals. It really does a fab job bringing down pollution levels(had once used mi readings for comparison and time taken by it to purify air)
Just be careful with the wire as its delicate but not that much that it ll break. Just take the whole thing out(the round corners slide out) think there is a video on youtube. Not only the edges but the entire wire has to be swiped(two three times run a damp towel along the lenthh of the wire)
Their cc is slow but very helpful just be at it. My purifier is the bigger one iirc yours is the smaller one but dont think the assembly or parts or functioning is different.
I remember last diwali mom left a diya burning in the room and this thing sucked the entire smoke out of the diya before finally shutting off as it choked. Thats what impressed me so much that i bought another unit.