Could just be a smudge from developing, couldn't it?

There was a smudge on the carpet made by the falling candles.

Turned out it was a smudge on his X-rays or some shit.

But there was a smudge on her face, scrapes on her arms.

There is a smudge of flour high on her cheekbone.

There was a smudge of fingerprints on the doorway casing.

There was a smudge of flour on her button nose.

When he sat up again, there was a smudge of dust on his forehead.

There was a smudge of fresh dirt on one cheek.

There was a smudge of black grease across one cheek.

Noel's brown hair was tousled, and there was a smudge of dirt on his face.

The sky was purple now, and the city was a smudge of light on the horizon.

And there was a smudge on her face that nobody had told her a thing about.

The trees were a smudge on the horizon.

There was a smudge of grease on her forehead, and both knees were scraped and raw-looking.

On the horizon was a smudge of smoke.