Sulfides eziri omu maizi nizibaasa kuhinduka amaizi, zirekura H2S omu mwanya. Okuhuuta H2S nyingi nikibaasa kureetera ahonaaho okuhurira okushaasha omunda, okusheeshasheesha, okugumirwa kwisya, okuhuuta, n‘obutwa bw‘amaani. Okwemanyiza omuyaga ogurikwingana 15–30 mg/m3 nikibaasa kureetera okusharara kw‘amaisho n‘okushiisha omutsi gw‘amaisho. Okuhuuta H2S kumara obwire buraingwa nikubaasa kukwatagana na cytochrome, oxidase, disulfide bonds (-SS-) omu puroteyini n‘ebiriisa by‘omubiri, kuteganisa enkora y‘okuhuuta kw‘obutafaari n‘okureetera obutafaari kubura oxygen, ekirikubaasa kuta amagara omu kabi.

Buri kicweka kya sodium sulfide nikikyeberwa ebicweka byakyo n‘okucondooza obukooko kubaasa kumaraho akabi k‘obukooko kuruga omu nshonga. Nyiga aha kutunga obuheereza bw'abakugu.