If it's radioactive in nature, you're screwed unless you live in a lead box. Duct tape is porous, you can't create an airtight seal with it. Then again, why would you want to? Hrm, let's see...what do think the end result of sitting in an airtight box is? I can't believe people fall for this crap. This is right up there with duck and cover. Airborne agents are notoriously hard to deliver on a massive scale. It's impractical. Contaminating water sheds/supplies would be the first and easiest thing to do. Not to mention the most effective. People tend to die rather rapidly without fresh water. After that comes radioactive devices. It falls out nicely, and it's hard to shield against. Aeresol agents come last.
unless you use red duct tape. Then you are supporting communism On a side note Curb your enthusiasm premiered last night on the Canadian station Showcase. One of the best shows I have seen in a long time.
Hell, Duct tape kept Mir in the sky for years! And, while most of us cant afford a nice air filtration system in our underground bunkers; (What? you do not have an underground bunker?! You are obviously not prepared. Besides, where else do I have room to store my 10,000 rounds of 5.56 and 3 year supply of MREs?) duct tape can create an airtight seal that could be used as a stopgap measure. I seem to remember the Israelis doing the same thing with tape on the window frames and doorways during the Gulf War when Iraq was lobbing Scuds suspected of containing Nasty Things (not to say that a big explosion is not a Nasty Thing)
When the US Govt moved us to "Orange alert" on the basis of possible imminent terrorist action, they suggested we stock up on plastic sheeting and duct tape to seal windows and vents in case of airborne-contaminants.