Here's some #writingadvice: No detail about your character is off-limits, so long as it advances the story and is not #gratuitous.
We are all biological entities with all the ick that implies—human—and in ways we won't admit to others, a psychological mess. Beyond us being #writers, by definition neurotic, our readers are no different in these aspects; they vary only in degree.
Detail the noisome everyday facts of peoples' lives, particularly if it helps describe living in foreign cultures, doing unique jobs often avoided, or living in places uncomfortable for anyone. Poverty has a smell, as does a fish market.
Relating these sensations lets your character see their world as they expect it to be, and by extension, it lets your #reader feel out of place but empathize nonetheless. Empathizing with a coal miner may be easier if you show her running to the equivalent of a bathroom through a dank, dark, claustrophobic tunnel, then feeling the dehumanization of doing her business a mile underground. Common details raise #verisimilitude, if applicable to your story.
For this reason, if your character picks his nose when no one is looking, if in his internal thoughts he admires guys while truly loving his wife, or if she has a sensitive nose and classifies everyone by how the stink... include the ick. Bathing, eating, dealing with sickness, controlling attraction to others, violating personal ethics when in trouble—doing things everyone does or has experienced is relatable. It feels... truthful. Don't leave these things out!
Just avoid making this stuff gratuitous. You don't want that reputation.