The smell will come out of the clothing pretty easy, I've hung stinky GI Joe uniforms outside at night and brought them in for the day (I didn't trust that they'd be safe from the sun) for a week and they were fine. Plastic figures are another matter. I have taken cigarette stinking GI Joes and completely disassembled them and put them in the freezer with some baking soda. They were done in a couple of days. Freezing takes the smell out of plastic, but I'm not sure what it would do to an assembled Mego figure.
90, Joe 90.... Great Shakes : Milk Chocolate -- Shaken, not Stirred.