One to avoid is cedar, because of the irritating & possibly toxic oils. That looks pretty safe though, & if you can't smell anything, I'd use it.
One thing you could do is to coat it with non-VOC clear waterproofing, to seal the wood; that would also make it easier to wash off feces etc.
But it's not essential. I use natural branches from the trees in my yard (not pine or cedar) & they're fine. Once in a while, I'll find some light-
colored powder under a branch in use...that's from a wood-boring beetle that came with the branch, lol. Won't hurt the snake & can't go any-
where.