I would perhaps check the following;
1) Replace your A/C filter and upgrade it from a MERV 8 filter to a MERV 11 filter.
2) Check your dryer vent pipe for excess lint build up. Folks should have the Dryer vent ductwork cleaned out every year or two, depending on how much they dry their clothes.
3) If dust/dirt is getting tracked in from the concrete floor in the garage, you may want to consider applying an epoxy coating.
Hope this helps....Frank D.
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Florida licensed Home Inspector #HI688. (352) 250-7818
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