Keening

The keening sound of the ambulance pierced through the silence of the night.

The old haunted house echoed with the keening cries of unseen spirits.

The keening shriek of the fireworks lit up the night sky.

The keening smell of rotten eggs filled the kitchen, indicating a gas leak.

The keening smell of rotten eggs indicated a gas leak in the basement.

The eerie keening of the siren warned the residents of the impending storm.