What I do is mix 1 part vinegar with six parts water and it doesn't smell and works great.There is also a cleaner called Healty Habitat that you can buy.
I use a water and vinegar mix for cleaning my tank. It's safe for me and my dragon, and cleans well. When I do a deep down clean out of the tank, I wash the removable parts of the tank with hot water and antibacterial dish soap in my kitchen sink.