1. Kusungirako kwa nthawi yaitali mumlengalenga ndikosavuta kutulutsa oxidize ndipo mtundu umakhala wakuda, ndi sublimation.Ili ndi fungo losamveka bwino ndipo imakwiyitsa pakhungu.Imatha kuyaka ngati kuli lawi lotseguka komanso kutentha kwakukulu.
2. Poizoni, makamaka zoyengedwa mosakwanira bwino zosakanizidwa ndi diphenylamine, zidzakhala poizoni ngati zitalowetsedwa kapena kupumira.Mankhwalawa amatha kutengeka ndi khungu, kuchititsa ziwengo, dermatitis, tsitsi ndi misomali, kutupa kwa conjunctiva ndi cornea, kukwiya kwa m'mimba ndi matumbo, kuwonongeka kwa impso ndi chiwindi, ndi chifukwa cha hemolytic anemia, kupweteka kwa m'mimba, ndi tachycardia.Oyendetsa ayenera kuvala zida zoteteza.Amene atenga molakwika ayenera kutsukidwa m'mimba nthawi yomweyo kuti adziwe ndi kulandira chithandizo.
