Quote Originally Posted by WayneStevenson View Post
I don't worry about fumes / vapours. Microwaves aren't sealed units. Otherwise they would be a pressure cooker
Look at the area right above a used deep fryer: you will see a sticky goo that won't come off. Ever. And venting the area doesn't help in the least. When that goo was fresh, it was frying oil.

In other words: don't mess with the fumes.