Well, I would get myself down to Walmart or order a new Microwave and use the 1 you just ruined for food for your lure building. Plastisol doesn't belong in food ....... grounds for the dog house if you are married. Also don't do this indoors. If you microwave too long you will have poisionous smoke throughout the house/apartment and a smell that will linger for a long time.
If you don't have the proper space then don't do it. Buying lures is cheaper anyway unless you are making a ton of them.