Hey everyone ! I read some old threads on chafhaye. None mention the smell specifically. I bought a bag and it smells like vinegar. Pretty much like apple cider vinegar. Lol. Is this what it's supposed to smell like? Thanks. 

Yes

Added to say since this hay gos threw a fermantation process its has a different order that smell like vinegar..  It always remided me of the silage that we fed to the dairy heifers/cattle.