1.   It was a damp musty smell.

2.   It was very hot in the room already and there was a musty smell.

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

4.   The clothes in the wardrobe had a damp musty smell.

5.   There was a musty smell and a deep silence.

6.   This, and the musty smell of books, was its chief attraction for Richard.

7.   Opening the door, she made a face at the musty smell.

8.   ...that terrible musty smell.