the air is depleting from your lungs
A hissing sound coming from a chest wound can indicate that air is being sucked into the chest cavity through the wound. This is known as pneumothorax.
A hole in the chest ... the hissing comes from the leaking air.
An Open Chest Wound (Sucking Chest Wound)
A ferret that make a hissing sound means they are annoyed or irritated
Coughing up blood, Sucking or hissing sound coming from the wound, frothy blood coming from the wound.
To make a humming or hissing sound, like an arrow or ball flying through the air; to fly or move swiftly with a sharp hissing or whistling sound., A hissing and humming sound.
Geese make a hissing sound.
it makes hissing vocalizations
Likely to be a punctured lung.
Snakes are reputed to make a hissing sound.
Could be a "hissing" sound
they make a hissing sound