How to make a gas mask!

Homemade GAS MASK

Firstly, I don't recommend you staking your life on the effectiveness of this homemade gas mask!  Any decisions that you make with this gas mask have no connection to me.

To me, this seems like a glorified paint mask.  I'm always interested in recycling those pesky soda bottles, please comment if you have any more ideas on how to do so.


Here's the original link to the project:
http://knowledgeweighsnothing.com/diy-gas-mask-with-a-2-liter-soda-bottle/attachment/24525/

Really useful info from the blog where I found this, visit them for more great projects.