Are you good about reading instructions?  Not just the ones to put stuff together, but the ones that tell how to care for a product. 

Trudy/TSM

I recently bought some new kid's plastic spoons, which I washed in the dishwasher.  What a disaster.  The problem was I hadn't  bothered  to read the "care" instructions on the back of the package.  The instructions which said the spoons should only be placed on the top dishwasher rack.  I had put them on the bottom rack and went to bed.  About forty minutes later I awoke to the smell of smoke.  A couple of the spoons had melted and the smell was awful.  If you've ever smelled burning plastic, you know exactly what I mean.  Yuck.  The smell inside the dishwasher has finally gotten better and I've learned my lesson.  Read the labels.