blow up (someone's) spot

Translations
разоблачать (кого-то)
He didn't mean to blow up her spot, but he accidentally revealed her secret.
Он не хотел разоблачить её, но случайно выдал её секрет.
Definitions
To reveal secret or private information about someone, often unintentionally or in a way that causes embarrassment or trouble for that person.
Words
spot

noun
пятно
blow

verb
дуть
blow up

verb
взорваться