Koj puas paub tias muaj cov xwm txheej uas peb cov huab cua hauv tsev tsis zoo dua li sab nraud? Muaj ntau cov pa phem hauv tsev, nrog rau cov pwm spores, tsiaj dander, allergens, thiab volatile organic compounds. Yog tias koj nyob hauv tsev nrog qhov ntswg qhov ntswg, hnoos, los yog tsis tu ncua ...
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