Race memory malaise

From Tardis Wiki, the free Doctor Who reference

Race memory malaise was an instinctive fear that humans had in the presence of Silurians, making them behave irrationally. In 1993, the Seventh Doctor and Liz Shaw built a telepathic emission dampener to help alleviate the effects while the Doctor was on the alternate Earth ruled by the Silurians. (PROSE: Blood Heat)