I started with a bottle and had the frustrating issue that the bottles leaked... It was a metal-bead bottle and both of the ones I had bought had the exact same issue, dripping every couple of seconds, making me anxious about getting the chins wet
I kinda gave up on them completely because of it and used a bowl kinda as a passover - if you use a heavy ceramic bowl and put it in a spot in the cage where they wont accidentally run into it, it works pretty well!
Our local petstore stocked up on rodent items recently and i found one of these bottles - and im really in love with them!
They work with a pin that the animal pushes up with their tongue instead of a metal ball and they absolutely don't drip
While made of plastic, i found it to be a non-issue since you attach it to the outside of the cage where they cannot chew on it. And the thick rubber cord holds it snug in place - i recommend it highly!
So yea a lot of text for me to say consider pin instead of bead bottles xP
And yea absolutely no poo smell, occasionally a little pee smell when they go somewhere they shouldn't but its very bearable