In the main room of the older apartment I live in, dust is accumulating very quickly. There is no carpet (only hardwood floor), no curtain, no air vent, no pet, no bedding, no clothes. Previous tenants had the same problem so it's not something I brought in.
I cleaned thoroughly, including the baseboard radiator (which, as a test, I covered with cloth to ascertain it's not the cause), behind the range and the fridge (there is a small open kitchen corner). Yet, here's what a surface looks like 3 days after wiping it clean:
The dust looks more like tiny fibers. In raking light, as seen here, it's quite impressive.
Any clue would be greatly appreciated.
For those who may have the same problem, the dust was fiberglass from inside the electric range. When burners were on, convection was sending tiny bits of it in the air.