# What does it feel like to get sprayed by a fire extinguisher?

**URL:** <https://boards.straightdope.com/t/what-does-it-feel-like-to-get-sprayed-by-a-fire-extinguisher/528503>\
**Category:** Factual Questions\
**Created:** [February 11, 2010, 12:19am UTC](https://boards.straightdope.com/t/what-does-it-feel-like-to-get-sprayed-by-a-fire-extinguisher/528503 "2010-02-11T00:19:38Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![Cartoonacy](https://avatars.discourse-cdn.com/v4/letter/c/848f3c/32.png) [@Cartoonacy](https://boards.straightdope.com/u/Cartoonacy)\
**Post date:** [May 12, 2014, 9:42pm UTC](https://boards.straightdope.com/t/what-does-it-feel-like-to-get-sprayed-by-a-fire-extinguisher/528503/21 "2014-05-12T21:42:17Z")

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> [@Senegoid](#):
>
> It contains compressed CO2, which expands massively as it is discharged. Expanding gasses get very cold, and this will get cold enough to cause frostbite. (Here’s an experiment you can do at home: Open your mouth wide and blow gently into the palm of your hand. Note that it feels warm. Now purse your lips and blow gently into the palm of your hand. Note that it feels cool.)

[The Master comments.](http://www.straightdope.com/columns/read/851/why-do-you-blow-on-coffee-to-cool-it-but-on-your-hands-to-warm-themhttp://)

Specifically:

[QUOTE=Cecil Adams]  
Suffice it to say no one believes you can pressurize air significantly by puckering your lips.  
[/QUOTE]

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**Author:** ![ebsh](https://avatars.discourse-cdn.com/v4/letter/e/8e7dd6/32.png) [@ebsh](https://boards.straightdope.com/u/ebsh)\
**Post date:** [May 16, 2014, 8:04pm UTC](https://boards.straightdope.com/t/what-does-it-feel-like-to-get-sprayed-by-a-fire-extinguisher/528503/22 "2014-05-16T20:04:00Z")

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It was walter.

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