Or build a dust filtrator! I call it the normal person's Corsi–Rosenthal Box
https://en.wikipedia.org/wiki/Corsi–Rosenthal_Box
Construction is straight forward and simple, you need two fridge stands, a few sheets of cardboard, and an exhaust fan.
Roll up the cardboard into tubes and join the bottom sides of the fridge stands together.
Use another sheet to mount the exhaust fan on top, and connect it to a two pin plug.
Wrap super thin disposable non-woven bedsheets around this contraption.
You should end up with something like this:
Tuck it into a corner somewhere, and after a few days:
If it gets dirty then you know it's working. (because that's dust that otherwise would've ended up somewhere else)
Some thoughts:
It doesn't have to be this big and unwieldy, you could make it smaller or taller, the idea is to trap dust that's floating around before it reaches your computer. I change sheets about every three days, and they're only a few rupees each so I buy packs of 50 or 100 at a time. They're available at medical supplies shops and on Amazon. Power consumption can be kept at a minimum by using a BLDC fan but yes, it has to be turned on all the time for this thing to work. The disposable bedsheets need to be thin as possible, like 25 GSM or so. It's not very effective if they're over 45 GSM.
The stands are usually under 350 in local shops:
https://www.amazon.in/UR-LITTLE-SHOP-Refrigerator-Dishwasher/dp/B081B62NHT/
I chose this stand because I intend to inset the fan and use this as a table to hold stuff, so I wanted something sturdy.
This has been in use for two years now and has helped a lot.