That is absolutely correct
Some people have pets,and you'd never know. Others. yikes!
I always ask my friend if they can smell a cat, telling them, "If you're my friend, you would tell me, right"?
That person's place looks very untidy, and the cat in a cage might raise questions.
It's amazing how we always can link scents, smells, odors with certain places. Some homes smell like food, baking, pets, smoke, cologne, perfume, (sometimes perfume AND what it's trying to cover).
For almost 2 years, my house smelled like glue, sawdust, grout, polyurethane, etc. during massive restoration. It was nice to smell food in it again.
I do think, though, that if you're going to take and post photos, you'd want to put your best foot forward. People notice everything, don't they?