Do آپ know what was the third thing Hermione smelled in her Amortentia?

Yeah, it was Ron's hair.

Webchat with JK Rowling:

Jess Mac: What was the third smell that hermione پگھلانا, سودھنا in the amortentia potion in hbp? (ie the particular essence of ron)

J.K. Rowling: I think it was his hair. Every individual has very distinctive-smelling hair, don't آپ find?

I think I saw in some interview that the 3 smell was Ron's hair...I'm not sure...

Ronald Weasley's hair was the third scent. Ron smelt:Molly Weasley's cooking, بیکن and Hermione Granger's perfume.

probably i think it was rons hair i'm not comepletely sure though

spearmint toothpaste
link

It is surly ron's hair, cause I alreay saw that in an interview and the smell of the thouthpaste it's just a modification from the movie crew, and it is not true :) .