Jim Parsons and Rihanna have been on the road doing press for their new animated movie, Home. During an appearance on Ellen, Parsons confessed he's gotten a whiff of the hip-hop musician here and there, and she smells amazing.

"Can I tell you," he began. "I've been doing press for the past four days with Rihanna and Steve [Martin, who's also in the movie], but, Rihanna smells so good. I am not kidding. She has a scent."

He says her smell is so distinct that he can even tell where she's been.

"At one point I took the elevator down to press in the hotel where we were doing it, and I went" -- at this point he sniffs the air loudly -- "'She was just in here. She was just in here' And they said 'No' and I said 'Oh yeah.' And I went into the press and I go, 'Were you just in the elevator?' She goes 'Yeah' and I go, "I smelled you.'"

"What does it smell like?" Ellen DeGeneres asked.

Without pausing, Parsons replied, "Heaven."

"I love Steve Martin, and I miss him," the actor continued. "I terribly miss her. I have this weird crush on her." He declines to say whether she shares those feelings, though it's probably a moot point: He's been with his partner, Todd Spiewak, for more than a decade.

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Parsons asked if Rihanna had been on Ellen before, which she has -- though DeGeneres confessed she did not notice her scent.

"That's a shame," Parsons said.

At the end of the segment, DeGeneres had an order for her staff: "Book her on the show so I can smell her!"

Home is in theaters March 27. Watch Rihanna explain how being famous put even more pressure on her to do well: