Ngaba uyazi ukuba kukho iimeko apho umgangatho wethu womoya wangaphakathi ubi kakhulu kunangaphandle? Zininzi izinto ezingcolisa umoya ekhaya, kubandakanywa i-spores yokungunda, i-pet dander, i-allergener, kunye ne-volatile organic compounds. Ukuba ungaphakathi endlini unempumlo evuzayo, ukhohlokhohlo, okanye uzingisayo...
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