Mustiness in a sentence as a noun

I can smell the various engine oils and general mustiness just by looking at these photos.

I think a part of it is that the background mildew/mustiness is gone from the environment, so one notices the urine smell more.

And it is this unique reaction that causes the unique used books smell.... Old books release hundreds of volatile organic compounds into the air from the paper, and it is this which gives books their scent, a combination of grassy notes with a tang of acids and a hint of vanilla over an underlying mustiness.

Mustiness definitions

noun

the quality of smelling or tasting old or stale or mouldy

See also: must moldiness