Nicole Kidman reveals worst on-screen kisser with 'gross' admission

Nicole Kidman has spilled the beans on her worst on-screen kiss - and it's not what you'd expect.

Now, while TV and movie smooches might all seem picture-perfect and romantic, leading us to ask how actors can possibly do it without falling in love, we know that this is most likely not the case behind the scenes.

Think a whole film crew watching, glaring bright lights, and a number of retakes - it doesn't exactly scream sexy.

And that's when you don't throw in any extra issues, such as not getting on with your co-star, or someone having food in their teeth.

The Oscar-winning actress, 58, appeared on the latest episode of the Las Culturistas podcast with hosts Matt Rogers and Bowen Yang on Wednesday (11 March), where she talked about the one pet peeve that's been a consistent problem for her when filming kissing scenes - bad breath.

The Babygirl star explained: "I’m very, very smell sensitive. I’m either drawn to or drawn away based on a smell."

Nicole Kidman has revealed her biggest pet peeve when it comes to kissing scenes (Mike Marsland/Getty Images for Omega)

Elaborating on the dealbreaker, Kidman admitted: "You could be the most gorgeous, gorgeous guy, and you come at me with bad breath, and I’m like no, no, no.

"If I say breathe on me, and I have to recoil? I’m out. I’m out. You could not offer me enough money."

She even provided an example and recalled a smooch she shared with Alexander Skarsgård when they played married couple Celeste and Perry in the psychological drama Big Little Lies.

The issue? The falafel sandwich he had for lunch.

"When Alexander Skarsgård ate a falafel sandwich before we did the scenes in Big Little Lies, I'm like, 'No, no, no, Alex. I'm meant to be into you and kissing you - put away the falafel now," Kidman said.

She hilariously added: "I'm meant to be kissing you and into you. Put away the falafel now. Because the bad breath does not turn me on.

The actress specifically mentioned working with Alexander Skarsgård in Big Little Lies (HBO)

“As I said, it is very important to smell good, but more importantly, the mouth - the taste of the mouth and the smell of the mouth - is very important to me."

Host Rogers went on to joke that the actress was doing some reputational harm to Skarsgård’s heartthrob status. Kidman laughed, “I’m sure he did not eat a falafel ever again. Nope, not before you kiss. Not before you make love. Put the falafel away."

To any falafel fans out there, take note.

During the podcast interview, the actress also revealed the best-smelling person she'd ever met was Rihanna.

She joked: "We don't need to unwind it or decipher it, just know that it's all true. It's intoxicating, like I will follow you around."