Eminyakeni yamuva nje, ngokuqaliswa kwemithethonqubo yekhwalithi yomoya esemotweni, ikhwalithi yokulawulwa kwezimoto nele-VOC (ezinokuguquguquka kwe-Organic Compounds) sekube yingxenye ebalulekile yokuhlolwa kwekhwalithi yezimoto. I-VOC ingumyalo wama-organic compounds, ikakhulukazi ibhekisa ezingxenyeni zezimoto nezimpahla zemithwalo noma izinto zokwenziwa kwamakhemikhali, ikakhulukazi kufaka uchungechunge lwe-benzene, i-aldehydes namaketoni kanye ne-undecane, i-butyl acetate, i-phthalates nokunye.
Lapho ukuminyana kwe-VOC emotweni kufinyelela ezingeni elithile, kuzodala izimpawu ezinjengekhanda, isicanucanu, ukugabha nokukhathala, futhi kubangele nokudlikizela nekhoma ezimweni ezimbi kakhulu. Izolimaza isibindi, izinso, ubuchopho kanye nohlelo lwezinzwa, okuholele ekulahlekelweni inkumbulo neminye imiphumela emibi, okuyingozi empilweni yabantu.