Using compressed air on a laptop or pc is so satisfying. The way the dust disappears and the evaporation of the moisture! Fast results.
We glued the other blades back on to tide him over until a replacement arrived, but each day one or two would break off and we'd have to give the laptop a good shake to expel them.
...it's often difficult to know how precise one must be when advising flatmates about compressed air.
...which also means they are a cheap source of refrigerant. Look up "charging A/C with gas duster" if you want to go down a rabbithole...
In my former life debugging signal timing issues on circuit boards I used to use this trick (using those "gas duster" cans upside down) to chill individual components to try to find out where the problem was.