1.   No footmarks disturbed the dust, cobwebs hung like festoons and a strange musty smell pervaded the atmosphere.

2.   The smell of ink pervades the air, while printers spit out scores of mailers.

3.   The smell of oil pervaded his home, which is heated by forced air in open grates in the floors.

4.   Still, the smell of nicotine pervades most of the huge building.