Kili: Aren't you going to search me? I could have anything down my trousers.
Tauriel: Or nothing.
Smaug: There is something about you. Something you carry, something made of gold. But far more PRECIOUS...
Thorin Oakenshield: If this is to end in fire, then we will all burn together!
Legolas: Do not think I won't kill you, dwarf!
Dori: Was that an earthquake?
Balin: That, my lad, was a dragon.
Balin: It never ceases to amaze me, the courage of Hobbits.
Kili: Tauriel...
Tauriel: Lie still.
Kili: You cannot be her. She is far away. She... She is far, far away from me. She walks in starlight in another world. It was just a dream. Do you think she could have loved me?
Bard: The Lord of Silver Fountain, king of carven stone, King Beneath the Mountain, shall come into his own. And the bells will ring in gladness, at the Mountain King's return, but all shall fade in sadness, when the lake will shine and burn.
Answer: You would have to assume so. Dragons are incredibly ancient creatures and powerfully magic, Smaug would probably have been alive around the time of the rings creation, and even if he didn't know about the history he could have sensed the magic in the ring. But I doubt that he cared much for it other than owning it, as he wouldn't be able to wield it.