It has been made famous by an episode of the sitcom, Seinfeld. In this episode, called "The Conversion", Kramer discovers he is affected by the Kavorka, he solves this by some religious ceremony, which results in him having a terrible odor, thus, being unattractive to women. This 'breaks' the curse.
"I know, I must have the Kavorka!"
This is untrue. (Source, my Father a native Latvian)<br>
This made-up term was popularized on an episode of "Seinfeld" called "The Conversion" where the character Kramer converted to the Latvian Orthodox Church.<br>
In real life, approximately two-third of Latvians are Lutheran and about a third Catholic. A small minority are Russian Orthodox or Jewish.<br>
If the Latvian Orthodox Church actually exists in any form it would be a very small minority.