If you get your water from a private well, you might be in for a special treat. Groundwater naturally picks up sulfur from decaying organic matter and rock formations millions of years old. Imagine Darth Vader’s bathwater, but with more minerals.
Why does my water smell like rotten eggs? - Starfish Bali
In extreme cases, the smell can be so strong it feels like you’re showering in warm mustard gas. But don’t panic—hydrogen sulfide isn't toxic at these levels, but it will make your hair smell like a swamp monster. The good news? Carbon filters or an oxidation system can scrub the stink out faster than you can say “Eau de Badonkadonk.”