[Idiom] What is "suck air from a room"?

[Angie8]

I found this phrase "suck air from a room" from reading a book, and I googled but still couldn't find the answer. I think it's an idiom but have no idea what it meant in this paragraph here:
"Dunlap’s book is called Mean Business. That atrocious pun gives you an idea of someone who revelled in his own ability to suck air from a room. The book cover features a picture of ‘Rambo in Pinstripes’ with two dogs."

Anyone please help me to explain it? Thanks so much!

 

[probus]

It is indeed an idiom, and I would say a slang idiom of AmE.

I think "Suck the air from a room" means to render everyone in the room speechless. It is typically done by astounding or horrifying them.

 

[Barb_D]

It also just means to take the energy from the room. Someone who is very boring can suck the air from the room.

 

[probus]

I knew you could do better than me on this.