Seriously people, use the fucking fan. It clears away odors and covers up the sounds of your dropping a deuce. If you want to stew in your shit smell and revel in the music of your magical poop plops, do so in the comfort of your own home. If you’re a guest and the bathroom has a fan, turn it on. We don’t want to share.
It is even worse in public bathrooms.
Europeans give Americans shit on public bathroom design, but the smell is a lot worse in European bathrooms generally.