Thin and very straight fibers have been appearing in household dust, primarily in the room which I occupy. I suspect these fibers to be fiberglass. These fibers shine/glint back if illuminated with a strong light source and are of varying length (<1mm to 6-8mm). These fibers appear to be consistent with a sample of fiberglass yanked from the attic. I noticed these fibers in the dust in my room about a month ago. A spot check of dust in other rooms shows similar fibers, though in a much smaller frequency.
A member of the household fell through the ceiling walkway above my room ~2.5 months ago, which pushed a lot of insulation through (and very probably dispersed it through the room). The process of fixing the hole also probably dispersed a bit of fiberglass insulation through the room. I suspect this to be the primary source of this contamination, but I can't be entirely sure.
I've cleaned the dust from the room thoroughly about twice a week (wiping down all surfaces with a wet microfiber cloth). The longer fibers seem to be appearing more rarely, but the smaller ones seem to still be appearing with some frequency.
I have a few related questions/concerns:
The particulate does not seem to be very dense in the dust, but it is noticable (especially in my room) with a flashlight. I spend a lot of time in my room for both work and leisure purposes; I typically sleep in my room, but have moved to sleeping in a different room in light of this issue. I haven't really noticed any changes in my respiratory patterns. I suspect this to be a health hazard in the long term; is this accurate?
Is this likely to be continued contamination from the ceiling incident, or is there another source of contamination (e.g. poorly-sealed lighting, poor/drafty attic entrance sealing)? There are 5 possible sources for contamination in my room which I can spot: 4 light fixtures and a central air vent. Light fixtures in the room are IC-rated, but I am not sure how hermetically sealed that means they are. I suspect the contamination is not through the vent, as these particles would then appear more frequently in the rest of the home as well.
What's the best "one and done" way of removing as much of this contamination as possible, assuming that the source of contamination is not still present (i.e., the particles were a one-time contamination from the walkway incident)? The room is carpeted (though we have long wanted to replace it with a hardwood/laminate). I have a HEPA air filter (a Winix C555, a relatively low-end model which has "multi-stage" filtering with a "true HEPA" filter) which I run fairly continuously on a low-medium setting (though I suspect that this may just be continuing to "juggle" the particles through the air). I can vacuum and dust the room more often as well, potentially daily.
Thank you in advance for reading my post, and for any advice or help you may provide.