The phrase “strange smile” is correct and usable in written English.
You can use it when you want to describe an expression that is out of the ordinary and odd. For example, “The girl gave her teacher a strange smile before quickly turning away.”.
"That," the madman said with a strange smile, "is merely a cardboard box".
"Now go out there and have some fun," he said, with a strange smile.
As the poem tells us, he went round to her home, having read the letter, which she then burnt in an ashtray "with a strange smile".
Depicted with long hair, a strange smile and a rosy complexion, he holds a folded-up sutra, resembling a remote control, in his hand.
One abandoned version recalls "my last sight of you alive / burning your last letter to me … yet with that strange smile, as if you had meant something quite [heavily crossed out] different".
With a strange smile, he told his therapy group that he expected to be charged with five murders and rambled on about killing himself and taking others with him, using his.22-caliber rifle, Glock handgun and bulletproof vest.
I wear a strange, foreign smile, stunned at finally shepherding the disparate parts of my floating world into the same cubic space.
Who is that strange, smiling glamour-puss?
"There's really no point in going if you're not trying to win," Woods reiterated, to which Strange smiled and said, "He'll learn".
Moby is a very strange, smiling 65ft blue whale-cum-houseboat, made of steel by Tom McClean, who hopes to sail her across the Atlantic.
Executives from all the licensees were at the All-Star Game in Phoenix, "and they're all walking around with strange smiles on their faces," said Howard Smith, M.L.B.'s senior vice president for licensing.
