Did mine today after 45k miles!
Like 2-3 weeks ago I started to get a weird powdery smell when using the A/C... past few days it kept getting worse. It was so dirty! Even had a good amount of dead bugs in it!
Started it up 2 different times and drove around, no smell!
I used the Fram CF10140 charcoal with baking soda. It was a little bit of a tight fit but worked fine and was much thicker than the stock Nissan filter I pulled out!