Hmm, I don't have much trouble with poo in general. It's the human baby poo that sometimes gets me (still not much, but I'm sure I'll get over that with my own kids.
Dog (and all carnivore's) poo smells way way worse than horse poo (hardly even worth calling poo, honestly. But it still doesn't bug me much. I have a 75 pound dog and live in an apartment without a yard and she goes 3x per day. I seriously have no trouble picking up her (very large) poo. I think it's just a mental thing. It smells weird, but I've smelled so much worse really.
I have a friend that has to control her gag reflex when she watches our dog because she thinks the poo is "warm" and "big." Those two things get to her more than with her smaller dog (more tootsie roll style poops...)
Anyhoo, horse poo is seriously nothing, totally agree. But I don't have that much trouble with dog or cat poo either. I'm not a generally squeamish person, so perhaps that's it.
Either way, at least you're cleaning it up! That's something to be proud of no matter your leanings! And older dog poo (like cleaning up a yard) has dried out pretty well and doesn't smell much, so it could just be in your mind, haha. We used to put Vix in our nose during anatomy class, perhaps that would help?
It's less revolting to pick up if you use the mini manure forks made just for doggie diamonds.
I think the distance it affords the picker upper makes it less offensive.
Plus, I've already perfected my manure fork technique.
What I ended up doing with the one I bought for my mini's tiny poop but it isnt' any different than the normal forks...
I have "forever wild" next to my back yard so I can just fling the doggy poop across the fence....my new sport....