mbachur, MDG –
Isn’t the point so that you’re not attracted?
The Ervat Davar is the hair.
There is an unrelated Gemara (Kesubos 72a) which states that a woman is not allowed to go out with an uncovered head, and brings a pasuk, ???? ?? ??? ????, which from the context of the passage in the Torah it is clear that it was done in order to denigrate the woman who is a sotah, so we learn from there that for a woman not to wear a covering on her head when she goes out is derogatory to her.
Note that the Gemara in Kesubos which makes the derivation from sotah never once mentions an obligation to cover the hair, rather to cover the head.
Also, note that the Gemara in Berachos which is attempting to prove that the hair of a woman arouses a man, brings support from a pasuk in Shir Hashirim, and not from a pasuk in the Torah, which would have been a much better proof. If the reason a woman must cover her hair is because it is attractive to men, then we have a source from the Torah itself, i.e. ???? ?? ??? ????.
There is more to say, but for now suffice it to say I think it is clear from these and other points that the two Gemaras are not related, at least not on the surface level.
The Ritva at the end of Kiddushin says that the halacha follows this Gemara. However, he says that one should not rely on it if he is not a ???? ???? ????? ?????.
If anyone actually read all of this, I hope you appreciated it. Thank you and have a good Shabbos.