Fashewar Shenhai-Hujja
Oxygen, wanda ke taimakawa wajen konewa, ba fashewa a kanta.
Duk da haka, lokacin da hankalinsa ya yi yawa, kuma abubuwa masu ƙonewa suna haɗawa daidai gwargwado tare da iskar oxygen a takamaiman rabbai, suna iya ƙonewa da ƙarfi a gaban zafi mai zafi ko buɗe wuta. Wannan tsananin konawa yana haifar da faɗaɗa ƙarar kwatsam, ta haka ya jawo fashewa.