fug

名词 fug:

1. (British informal) an airless smoky smelly atmosphere

1. Open the window there's quite a fug in here.
   打开窗户吧--这里的空气不新鲜了。

fug

n.（名词）
A heavy, stale atmosphere, especially the musty air of an overcrowded or poorly ventilated room:
室内的闷热空气（或气味）：一种沉闷、不新鲜的气氛，尤指由于屋内人太多或通风不好造成的有霉味空气：
例句：
.In spite of the open windows the stench had become a reeking fug.(Colleen McCullough)
.尽管开着窗但臭气已经弥漫空气.(科琳·麦卡洛)

来源：
Perhaps alteration of fogo [stench]
可能为 fogo的变化 [恶臭]