noun
house dust
Refers to fine dust that accumulates indoors, often associated with allergies.
ハウスダストが原因でくしゃみが止まらない。
I can't stop sneezing because of house dust.
Variant with interpunct; less common in everyday writing.
ほこり is the general Japanese word for dust, while ハウスダスト specifically refers to indoor household dust, often in the context of allergies.
Loanword from English 'house dust'.