You may want to step it up a notch...
See thid link for bunches and loads of masks..
http://www.approvedgasmasks.com/mask-gas.htm
MSA Affinity Ultra disposable N100 mask with exhalation valve
Affinity Ultra N100
5/$39.89
They have many types with the prices below.
With so many gas masks to choose from, which one is right for you? See our Buying Guide
AGM supplies hundreds of Police Departments and Fortune 500 companies with gas
mask, gas mask filters, and all types of survival gear from NBC protective suits to
Potassium Iodide and medical kits. Before you purchase a cheap, used mask take a
look at our new gas masks from MSA, Scott, SGE and more. Many popular civilian gas masks
are modeled after military units, like the MSA Advantage 1000, the Scott ProMask, and the
SGE 1000. We offer brand new military masks like the MSA Millennium and the M-95.
For complete Nuclear, Biological, and Chemical protection we have new and surplus
NBC suits, hoods, gloves, boots and more like KI or potassium iodide tablets, sold as
Pro KI or Rad Block pills. Order online or call AGM anytime for all your safety supplies.
http://www.approvedgasmasks.com/mask-gas.htm
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As for chicken, I buy whole chicken and cook and then can in mason jars, it the best way, because you know whats in there. Canning is easy to learn and do, get into it, lots of soups and other meals can be put up for hard times this way..