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Emily Blunt got candid during a recent appearance on “The Howard Stern Show” (via People) about how she’s had to fake chemistry over the years with certain co-stars she just struggled to connect with on set. Blunt has acted opposite many high-profile leading men throughout her career, from Matt Damon (“The Adjustment Bureau”) to Tom Cruise (“Edge of Tomorrow”), Dwayne Johnson (“Jungle Cruise”), Ryan Gosling (“The Fall Guy”) and Cillian Murphy (“Oppenheimer”).

“Have you wanted to throw up?” Stern asked Blunt about kissing some of her male co-stars during filming. The Oscar-nominated actor responded: “Absolutely. Absolutely.”

“I wouldn’t say it’s sort of extreme loathing, but I’ve definitely not enjoyed some of it,” Blunt added

Blunt declined to name any co-star she couldn’t generate chemistry with, but she did say: “I have had chemistry with people who… I have not had a good time working with them.”

“Sometimes it’s a strange thing. Sometimes you could have a rapport that’s really effortless, but it doesn’t translate onscreen,” Blunt continued. “Chemistry is this strange thing. It’s an ethereal thing that you can’t really bottle up and buy or sell. It’s like there or it’s not…It’s just easier when you have a natural rapport with someone.”

Blunt has been acting for so long that at this point she has a formula down for how to build chemistry, saying: “I’ve got to find something I love about everybody. I have to find something … Even if it’s one thing.”

“It might be that they have a nice laugh or I like how they speak to people. They’re polite. I mean, it might be something random,” Blunt explained. “But find something you love about that person or something you love about them as the character and then kind of lean into that.”

Blunt earned an Oscar nomination earlier this year for her supporting role in Christopher Nolan’s “Oppenheimer,” which took home the Academy Award for best picture. She’s currently on the big screen in Universal Pictures’ action romance “The Fall Guy,” co-starring Ryan Gosling.