Chiny'ai (ku Chingezi: soot) kana chin'ai zvinoreva mhukutu yetsito inobatirira panhungo nehuswa hwakapfirira imba, zvikurusei mukicheni. VaKabwa neKinande vanoti embiro (soot) kureva chiny'ai. VaGwere vanoti mbiro (black soot left on pots and utensils) kureva tsito dzinosara papoto kana hari. Vatauri veLugungu neGikuyu vanoti mbiro (soot) kureva chin'ayi.