I was never convinced that fullers and blot bang rub would have been all that effective actually...
I was shelter marshall at Binbrook during the 80's and looking at the sheets of plastic and bodge tape to protect us against sarin and/or a couple of megatons of USSRs finest I came to the conclusion that it was probably better to strip the lot off and stroll home to die with the wife and kids. Call me a realist if you must...