Mabala achizungu pa zovala zoyera angawonekere pazifukwa zotsatirazi:
- pamene kutsuka, ufa wodetsedwa wosasamba kapena mphamvu yozizira yosagwiritsidwa ntchito;
- mafuta pa nsalu;
- okosijeni ndi mafuta odulidwa.
Ngati atasamba chikasu choyera, chovalacho chiyenera kutsukidwa mobwerezabwereza pamtambo wotentha, koma mwachikondi. Zitatha izi, chinthucho chiyenera kuchapidwa m'madzi ozizira ndi kanyumba kakang'ono. Mawanga a dzuwa pa zovala zoyera zimatha kutsukidwa ndi mpweya wa oxygen. Kwa matenda osakanikirana izi zikutanthauza kuti si zoyenera - mukhoza kuwononga chinthu.
Mawanga a azungu pamafuta ovala zoyera angathe kuchotsedwa mosavuta ndi mchere ngati utoto uli watsopano. Kuphatikiza apo, kuchotsa utomoni kumachotsedwa mosavuta ndi tsitsa lochotsa.
Mawanga a mdima kuchokera ku thukuta pansi - nthawi zambiri chodabwitsa. N'zosavuta kuchotsa mawanga achikasu kuchokera thukuta. Kuti muchite izi, chinthucho chiyenera kulowetsedwa mu madzi asapi kwa ola limodzi, kenako kutsukidwa ndi mpweya wa oxygen.