Noun

1. A heavy, musty, and unpleasant atmosphere, usually in a poorly-ventilated area.

Quotations

• 1996, Janette Turner Hospital, Oyster, Virago Press, paperback edition, page 4

  On certain days, when hot currents shimmered off Oyster's Reef, we would detect the chalk-dust of the mullock heaps, acrid; or, from the opal mines themselves, the ghastly fug of the tunnels and shafts.

• 2005, J.K. Rowling, Harry Potter and the Half-blood Prince, Bloomsbury, hardback edition, page 42

  The misty fug his breath had left on the window sparkled in the orange glare of the streetlamp outside.