noun
metallic taste; taste of iron
Refers to the unpleasant metallic or iron-like taste, often from water, food, or blood.
この水は金気があって飲みにくい。
This water has a metallic taste and is hard to drink.
口の中に金気を感じる。
I feel a metallic taste in my mouth.
Describes a smell or taste of iron, often used for blood or rusty metal; 金気 is specifically the taste sensation.
Compound of 金 (metal) and 気 (sensation/feeling), literally 'metal sensation'.