Smell your belly button! Yeah, you can't. It's impossible. However, the other day, Alpha someone actually emailed Alpha about preventing his belly button from smelling badly. Aaron Marino of alpha m. checked out his belly button.
From his own observation, nothing was out of the ordinary. From there, Alpha googled the belly button and found some disturbing research! Scientists swabbed dude's belly buttons and found thousands of bacteria within the belly button. And each is unique! A personal ecosystem is growing in there!
Do you need to do something about it? Yeah, continue to shower as normal! If you are showering on a regular basis, you don't need to do anything special to eliminate the natural and normal bacteria. If you have a 'deep' belly button, it's recommended to dry it out with your finger or a Q-tip. If you notice a peculiar odor from your navel, it's a yeast infection in your belly button. Flakiness and redness warrants a visit to the doctor. But, if you shower regularly, you shouldn't develop a problem.