[Centurion2000]

Well, the FIRST thing you should do is to go get a hepa filter, some ducting, a ducting fan, and some wide (like dryer hoses) hose.

You really need to get a good filtration air intake system put into a window and sealed BEFORE making your safe room.

That is if you want it to last longer than 24 hours or so without suffocation.

[donozark]

True. But if you have an Israeli gas mask with a 40MM NATO approved filter you can survive an additional 8.4 minutes. At least that's what the directions say...but there is no warranty.

[Dr Warmoose]

Well, the FIRST thing you should do is to go get a hepa filter, some ducting, a ducting fan, and some wide (like dryer hoses) hose.

Nothing like positive air pressure to help the aesthetics of your house. WWMD (What would Martha [Stewart] Do)? Just what you suggested.

To really peeve the neighbors, have a strong air filtering system running on a generator.

Those of us who were Y2K Ready are now Y2K+3 ready!

[Ichneumon]

Well, the FIRST thing you should do is to go get a hepa filter, some ducting, a ducting fan, and some wide (like dryer hoses) hose. You really need to get a good filtration air intake system put into a window and sealed BEFORE making your safe room.

A HEPA filter won't do jack against chemical weapons. In fact, a setup like you describe will bring airborne chemical weapons into the house faster than a totally unsealed house with the doors and windows closed and the the A/C off.