Can Anyone Help Estimate Decibels for a Balloon Pop?

[Anthony C]

I was walking through a parking garage and just about to leave when a child's balloon popped about 12-15 feet away from me.

I've read that a balloon pop is as loud as a gun shot. Lets say it was 140 decibels. At 12-15 feet away what would the decibels be?

Another factor is the concrete walls and cars so no sound is being absorbed but in fact maybe amplified.

I'm thinking about convincing a doc to put me on prednisone but not sure I'm overreacting.
Any help?

 

[fhs]

A balloon pop might be as high as 168 decibels. Other estimates are at 125. It must be for less than a millisecond though. If it was 12-15 feet away I think that you're ok and don't need Prednisone.

http://www.dailymail.co.uk/health/article-4175980/Popping-balloon-louder-SHOTGUN.html

 

[Rustics]

I feel it depends on how big the ballon is and what not
Generally the smaller the ballon and tighter the louder

Bigger the ballon the more dispersed the sound is

I had a latex glove pop in my ear by a co worker, it was the thumb part blown up
Which sounds like 160 - 170 db