I love the smell of a dusty barn, horse sweat, shampoo, my friends bute powder, just horse in general.
I HATE the smell when your walking around brushing your horse, and they rip one right. In. Your. Mouth.
I'm going to have to agree with CCinSc... a draining abscess is the absolute worst thing I have ever smelled come out of any animal.. and I have a lot of animals! The best is burying my face into Milo's mane.. that smell is heaven, kinda partial to the smell of leather as well.
I love the smell of barns and indoor dirt arenas.
I think the worst smell possible is draining abcess. Got in on my clothes and me and was still smelling it days after even with a shower, washer and new clothes..
My favorite smell has to be the smell of new leather. Whenever I get new tack (and I get my new zebra tack tomorrow so I am going to be in heaven) I spend a decent amount of time just smelling it. That seems weird to some, but I looovveee it.
My least favorite is the smell after I've picked out very dirty hooves or after a horse has been shoed. That's an awfully rotten smell.