1.   Faint odors of decay waft through the air.

2.   The basement air was filled with dust and a faint electrical odor, and debris was three feet deep, he said.

3.   The problem began just after the second intermission, when some patrons detected a faint burning odor.

4.   When an old colleague summons Nathan to a state mental hospital on the day before Thanksgiving, the faint odor of resentment hangs in the air.

5.   As employees filed back to work, a faint odor of burnt wire hung in the entranceway.