Contents of bubble wrap (3)

I believe the answer is:

air

(Other definitions for air that I've seen before include "Ventilate, say grievance" , "Vital thing" , "Broadcast; express" , "Atmosphere, manner" , "Divulge" .)

I've seen this clue in the Newsday.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.