How do I clean out dust in the fans of my MacBook Pro?

Solution 1:

At least, you will be able to have access to your fan without breaking your MacBook Pro. iFixit has a step by step procedure that you can follow to take off the parts of your computer so that you have access to the fans.

As far as I'm concerned, I would use a can of compressed air.

Solution 2:

I used the IFixit guide that OGenius linked to. I had a small piece of paper stuck. I did not actually have to remove the fans, I just opened the laptop, blew a bit and used a vacuum cleaner a bit too.