I think most will decide that someone other than Canon is the joke in this case.So basically nothing gets in and nothing gets out.
This is what I get from all the videos and articles I've encountered so far. EXCEPT for ONE: And that is from CANON themselves. They say to use an external fan. WTF??
Come one guys, enough is enough! I love Canon but we can't be apologizing about the heat issues. Canon's become a joke now.