We kept rabbits in a garage. We used fans for air circulation and air conditioning for summer comfort.
We used trays under the cages to catch droppings. If you are going to clean every day, put a handful of pine shavings in the tray in the spot where the rabbits usually go to poop.
Rabbits will usually use the same corner as their potty corner.
The pine shavings do a pretty good job of reducing that smell.
When we took rabbits to the county fair, they stayed there for 5 days over trays that had two inches of pine shavings. Very little smell there too.
One trick we learned was to use a dustpan to scoop the waste from the trays and dump it into a plastic bucket.
Have a good day!