Yes, you probably have made your linen into a pasted linen strop and possibly your leather as well, to some extent. How much depends on how your pasted strop is pasted (how much Chrome Ox was applied, most use too much) and how much was on the spine & bevel. Probably not enough to worry about now.

Many linen strops were pasted to begin with though not with Chrome Ox. I would clean your blade in the future to keep contamination to a minimum. The most intrusive contaminate to hanging strops is air borne dust.