be blown away

To be thoroughly impressed, overwhelmed, or excited by something. I am blown away by the show of support from everyone. I was blown away by how good that movie was!

blown (all) out of proportion

Exaggerated or magnified beyond the true scale or truth of the matter. It was just a minor tremor, not even a proper earthquake, but the media has it blown all out of proportion. These reports on the crime rate are blown out of proportion, if you ask me.

be blown to smithereens

To be blown up or broken apart into tiny, fragmentary pieces. "Smithereens," first appearing in English in 1829 as "smiddereens," is likely derived from the Irish word "smidirín" or "smidiríní," meaning "fragment." I wish I could still go visit our old family home, but it's already been blown to smithereens by the demolition crew. The village was blown to smithereens by the typhoon's gale-force winds.

blown (up)

Sl. intoxicated. I guess I'm a little too blown up to drive.

blown away

1.mod. dead; killed. (Underworld.) Four of the mob were already blown away when the cops got there.

2. and blownmod. alcohol or drug intoxicated. Whatever that pill was, Cecilia is totally blown away. She’s blown and alone and making a groan.

3.mod. overwhelmed; greatly impressed. (Often with with or by.) We were just blown away by your good words.