Nearly everyone on the planet has know been made aware of the enormous threat posed to the flying public by harmless household liquids combined to become deadly explosive cocktails. The Register (an online publication) took an opportunity to research the subject and has concluded that all the furor is nonsense. They detail the ingredients and procedures necessary to actually produce the explosive end product. The Register concluded that it would be easier to bring on board the end product TATP (interestingly not a liquid at all but a non-descript white powder) than try to mix a batch while in the air.
They also conclude as do I that the current tempest in a teapot about necessary changes to the security procedures at airports is pointless and misdirected.
Read the article at the Register