Pollinating

Can you pollinate a plant from a different strain. Ive got organge bud pollen and mastkush plants growing.
Also i had just remembered that i kept this male orange bud plant in a bag (its been there for 2 months and has been air dried) and there should still be pollen on it.
Would this pollen still work even though it wasnt kept in freezer?

you can cross strains, yes. 2 month old pollen may work. couldn't hurt to try.