Makes her more attracted to him.

Ino took a big whiff of the rose, but didn't seem to be immediately affected. "Why do you keep being flowers under my nose?"

"I dunno, just seems right, why do you keep sniffing them?" he quipped.

"...it just... Feels right..." she blushed. Meanwhile, Naruto noticed she was looking at him more subtly. Having a thought, he held the rose under her nose again, and she unconsciously sniffed it.

"...is it just me... Or did you get a little more... Well built while you were gone?"

"Yeah, has a lot to do with Pervy Sage beating the crap out of me," Naruto said as they headed back into the shop proper. The rose seemed to increase her attraction to him, and given how it seemed to be gradual, it was a permanent effect, on he would take his time with.

He then picked up a daffodil, and held it under Ino's nose and she sniffed again.