Saying you would reject a house because of dogs is ridiculous.
Once you’d moved in and there was no dog you would get rid of the smell pretty quickly. I would say that most houses in the country have had a dog or cat living in them at some point, and presumably if a house doesn’t smell of dog when you view it then that doesn’t mean no dog has ever lived there.
It can be off putting because it leaves you thinking of that rather than concentrating on the house, just as clutter would.
I once viewed a house which was so cluttered you had to step over piles of clothes/toys etc to get to anywhere. There was so much of it that I couldn’t tell you anything about the house. But obviously the clutter would be gone if I had bought it, but it meant I didn’t concentrate on it.
I’ve sold three houses in my time, all of which I sold to non dog owners, and I had two dogs and two cats, a parrot and a budgie in the last one I sold. And we had several offers.
Besides which if the OP has dogs what do people expect her to do? Get rid of them? Not sell because no-one will want to buy? Which isn’t true...
Yes, you take the dogs out when people come to view, but if someone is put off purely because you have a dog they probably weren’t going to buy it anyway.