I use to keep 2 vivs and a snake tank in a tiny studio apartment, and now have 2 vivs and the snake tank in a bedroom. I don't have a problem. The only time I ever actually came across a bad smell was when a couple crickets got into a space the frog couldn't get to and died and started rotting. Crickets stink. But still, I had to get pretty close to it to notice. If you keep up on maintenance and spot cleaning, I doubt you'll have a problem.