There is no echo. It's all in your head. Just listen to the tale of Sukarno, the horniest world leader in history.

Sources:
https://medium.com/war-is-boring/the-cia-and-kgb-tried-to-blackmail-this-world-leader-with-sex-tapes-927fc7ddbd48
https://security.blogs.cnn.com/2012/04/18/sex-and-espionage-a-long-and-sordid-history/