长期反复吸入一定量的硫化氢可引起嗅觉减退，以及出现神经衰弱综合征和植物神经功能障碍。

Repeatedly inhaling a certain amount of hydrogen sulfide for long term may cause hyposmia neurasthenic syndrome and autonomic dysfunction.

明智的话，嗅觉减退的人食用食物前先让有正常嗅觉功能的人检查食物。

It may be wise for a person with normal olfactory function to check these foods before someone with an impaired sense of smell eats them.