Bringing sheimos into bathroom

May one bring covered sheimos into a dirty bathroom, for example, a Portasan.

What exactly is the scenario? For example, Siddur in a purse? That’s ok.

The sheimos is in a clear plastic laminate, in a pocket.

A. Is the laminate considered a covering?

B. Does sheimos in general need a double covering in a dirty place?

In this case the laminate isn’t enough but if it’s in the pocket that’s ok.