antiseptic|antiseptics

她的道歉听起来很冷淡，就像消过毒一样毫无感情。

Her apology sounded ___antiseptic, devoid of any real emotion.

医生建议在包扎前使用抗菌剂清洁伤口。

The doctor recommended cleaning the wound with ___antiseptics before bandaging.

伤口需要用无菌纱布包扎以防止感染。

The wound needs to be covered with ___antiseptic gauze to prevent infection.