Vacuum leak or your window is open.
A ferret that make a hissing sound means they are annoyed or irritated
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.
since you did not go into any great detail about the noise i am going to guess that there is a leak somewhere between the air filter and the intake. possibly the throttle body area.
it makes hissing vocalizations
Snakes are reputed to make a hissing sound.
The hissing sound of the blue flame on a Bunsen burner is due to the rapid movement of gas molecules as they mix with air and combust. This turbulence creates vibrations and generates sound waves, resulting in the hissing noise.
Could be a "hissing" sound
the air is depleting from your lungs
A hissing noise
they make a hissing sound
They just kinda make a hissing sound and smack their lips. They just kinda make a hissing sound and smack their lips.