Hi Badwx25

If you have hand tools it is practical to dismantle a lens until you get to the shutter blades and drip Zippo fluid (petrol cigarette lighter) into mechanism until it frees.

If you google the instructions for your lenes may be available.

If you don't have a lens spanner a pair of pointed nosed pliers and a file can be used to make an equivalent tool, or a pipe of the correct diameter, so there is less risk of a slip, inspect carefully that a threaded lens (nut) ring has not been sealed with a dab of nail varnish/lacquer.

But you will get dust into the lens for sure even in a normal dust free room.