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If you can't live without your flat iron, but notice a burnt smell when you're using it, you need to make some changes, girl. Sure, a flat iron uses heat to get your strands sexy-straight, but you shouldn't be scorching your hair in the process. The next time you get out your flat iron, follow some quick procedures to make sure it's in good shape to press your locks. After all, the goal is to straighten your hair, not burn it, right?