Please join some more snake communities, like fb groups and other forums, if this one isn't enough to convince you... You'll get much more convincing! No experienced keeper moves their snakes into a separate tub to feed, or even new keepers who have done good research. That it helps you OR the snake in any way is just a myth!
The fact that this myth is even persisting among those who have not done their research is only because species like ball pythons are so docile and easily swayed from eating, and they don't show stress in a clear way as some other species, so new keepers don't get a good bite in them. In fact, you will have a much better chance of the snake accepting f/t food too if you feed inside the enclosure, assuming you have good husbandry for the snake.
Feel free to come move my green tree python or tanimbar python out of their enclosures and into a tub before every meal.
Anyway, I also kept rodents in the same room as my snakes, only about 3 feet away. Initially, they became very excited by the scent but only for the first day, and then got used to it and know that food isn't coming.
