It hit you like the back-blast of an explosion as you entered the room.    From Wordnik.com.  [Punch, or the London Charivari, Volume 159, July 7th, 1920] Reference

They got into the car and roared out of the parking lot, leaving a billowing back-blast of gravel and dust.    From Wordnik.com.  [Midnight in the Garden of Good and Evil]

The wonders of digital communication and one of the reasons the left is having so much trouble getting away with their bovine back-blast.    From Wordnik.com.  [Conservative Outpost] Reference

"It should not be necessary to point out to you that if they have been able to develop a wall-shield that will stand up under those conditions, the back-blast through the breech of the Q-gun will blow the Brittania apart as though she were so much matchwood.    From Wordnik.com.  [Galactic Patrol]

A Marine was knocked out by the back-blast.    From Wordnik.com.  [WCAX - Local News] Reference

You’ll be singed by the back-blast!.    From Wordnik.com.  [Writer Unboxed » Blog Archive » MacAmazonGate] Reference