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.
gotta appreciate finnish home design, usually all ventilation systems have exhaust in the toilet/bathroom and intakes in other rooms. no need to switch anything on or off when pooping. also less mold.