Bilbo told Smaug a riddle to keep him distracted.
Smaug tells Bilbo not to trust dwarves:In return for the excellent meal [of the Company's ponies] I will give you one piece of advice for your good: don't have more to do with dwarves than you can help!Smaug-The Hobbit: "Inside Information"
Clue finder is one of the names that the invisible Bilbo Baggins uses when he boasts to Smaug the dragon.
His sense of smell. It is one of the main reasons why Gandalf chooses Bilbo as the 14th member of the Company (because while Smaug would be familiar with the smell of Dwarf, the smell of Hobbit "would be all but unknown to him").
The dwarves are Bilbo's friends for most of the Hobbit.
It was his smell. Smaug had never encountered a hobbit before. He did not recognize the smell of him, but could tell that he had been with the dwarves.
Bilbo Baggins
Firstly, he gets the dragon to brag about his chest with jewels encrusted. When Smuag decides to show it off, the weak spot is revealed, and Bilbo sees it.
Smaug has never smelled anything like Bilbo and he cannot place it.
In the beginning it was Smaug , then in the end of The Hobbit , Bilbo gains it
Smaug is the major conflict who is slain by Bard.
The Hobbit is fairly linear. There are a few places where the time line backs up, particularly when the dwarves and Bilbo are exploring Smaug's den and Smaug is attacking Laketown.
Bilbo told Smaug a riddle to keep him distracted.
He saw a small bare patch. That bit of information is what led to Smaug's death.
No, he makes it back home. After all, he does have a part to play in The Lord of the Rings.
Bilbo, Thorin, Smaug, Gandalf, Precious, the dwarves
By 'the hobbit', I'm supposing you mean Bilbo Baggins in The Hobbit? If so, he faced Smaug the Great Dragon, King of the Lonely Mountain.