[Pharmboy]

Call me crazy, but I got one of these

two months ago. I work near 34th and Madison and keep it in my desk.

[csvset]

Have you considered a EEBD, (Emergency Escape Breathing Device)?

Here's a link to the manufacturer that supplies the Navy.

Ocenco

Click on the link for the M-20.2

It's good for 15-20 minutes of oxygen at a "work" rate or 32 minutes "at rest". Has a hood that is fire resistant.

[ExSoldier]

Okay, you're crazy. I'm a graduate of the US Army's Nuclear, Biological and Chemical Warfare school. I hate to burst your bubble, but any sort of chemical agent used (unless it is a purely choking type of agent) will have multiple portals of entry into your body; inhalation being only one of them. Most all nerve and blood agents absorb right through your skin. That's why the military has the MOPP (Mission Oriented Protective Posture) suits, consisting of special suit, booties, gloves, mask and hood. So, get the suit, too. If they hit using a pure form of agent, you'll have just nine seconds to don both mask AND suit. That's the rate of action for Soman, Sarin and VX in pure form. Rate of action is the time from the moment of contamination to the moment of death. To be fair, when these agents are diluted a bit, usually for easy dispersal (some nerve agents have the consistency of motor oil when pure), the rate of action lengthens to a couple of minutes. I'm a published author on this subject.