Kim Kardashian West can "smell" tooth decay

Asked her hidden talent, she said: "I can smell when someone has a cavity. It's a very specific smell - not a bad-breath smell - but something that is really strong."

Despite laying her life out on TV, the 35-year-old beauty admits she wants a "little bit more privacy".

And Kim also admitted she'd love to "creepily follow" her kids around if she were invisible because they make her laugh so much.

Asked what they'd do if they were invisible, Kanye said: "Women's locker room."

Kim said: "I would probably creepily follow my kids around, see how they act, see what they talk about. I record my daughter just talking because the things she says are so funny. I could watch her talk all day."

Kanye conceded: "Yeah, maybe. See, Kim? Yours is so much nicer than mine."

The brunette beauty wants to start compiling a book of things her husband says because he always makes her laugh.

In a joint interview with Harper's Bazaar magazine, she said: "Kanye just says the funniest analogies that are so random. I should start keeping a book - in 20 years, I'll have a big book of analogies. They always make me laugh."

And the 'Famous' rapper always finds his spouse funny, though she doesn't think many people appreciate her sense of humour.

He said: "Kim's just a funny person in general."

She added: "But I don't get credit for being funny; it's, like, not a thing."