First time on ANY forum. I'm trying to identify some books I read more than twenty five years ago. All by the same author. George somebody I think. They all dealt with humans discovering mental powers. In one book aliens tried to kill all humans on earth with missiles but just succeeded in releasing the full potential on the human mind. Most humans died simply because they wished they were dead or wish for a "death ray" (which emitted poisonous radiation) or wish for a million pounds and get crushed to death when it turns up in coins. The books hero creates a code word for his mind so that he can't make accidental wishes, a German word, something like 'aufmachen'. In another book the hero is a 'stinker'. No humans can get near him without feeling an uncontrollable urge to kill. It turns out that this a defence mechanism of aliens who are controlling most of the world but find there are certain humans who are immune to their mind control. These may be childrens sci fi but I was reading from both childrens and adult sections of the library at the time so.... Any ideas?