Sulfide mu mazi zikunze kwangirika, zigasohora H₂S mu kirere. Guhumeka H₂S nyinshi bishobora guhita bitera isesemi, kuruka, kugorwa no guhumeka, kubura umwuka, ndetse n'ingaruka mbi z'uburozi. Guhura n'ikirere kiri hagati ya 15–30 mg/m³ bishobora gutera conjunctivitis no kwangiza imitsi y'amaso. Guhumeka H₂S igihe kirekire bishobora kugira ingaruka kuri cytochrome, oxidase, disulfide bonds (-SS-) muri poroteyine na aside amine, bigahungabanya inzira zo gutwikira uturemangingo no gutera hypoxia y'uturemangingo, bishobora gushyira ubuzima mu kaga.

Buri gice cya sodium sulfide gikorerwa isesengura ry'ibice byacyo no gusuzuma umwanda kugira ngo haveho ingaruka z'umwanda uturutse aho ukomoka. Kanda hano kugira ngo ubone serivisi z'umwuga.