Smarter than art 1 Shikimaru, yes. Even Kakashi later stated he has a brain comparable to that of Shikimaru's, and he's backed it up
Better than Part 1 Lee's taijutsu, yes. (excluding gates) The databook backs this up, and he has a sharingan.
Sense of smell at least comparable to that of Kiba's? Of course. If it wasn't true Naruto wouldn't have stated it.
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Says you. Yet my claims are supported by the manga, your opinion aint.
Even when he was younger he showed a good sense of smell
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I realise people want to downplay Kakashi, but let's not deny manga canon.