Conjectures. Don’t trust conjectures.
I have a whole different take on the question, which is being cautious, the old “better safe than sorry” when there are more doubts than certitudes.
So why not leave your discs at a friend’s place for example?
Besides, you say you put them in paper sleeves then in the box… and I wonder how one can manage this without placing the discs in a mechanical stress situation. Warping is at the door. It would be far more advisable to put them in 25-discs cakeboxes. In cakeboxes, discs rest on their stacking ring.
Don’t forget that discs should always be stored vertically (except when they can rest accurately on their stacking ring) while avoiding stress on the edge, to avoid warping. This is achieved by the usual cases, jewel boxes and other proper storing stuff. Paper sleeves on their own don’t achieve this in the least.
Frankly, if there are things on these discs that are important to you, and if you can come up with another solution, don’t do this. - once again, “better safe than sorry”.