While you’re fixing this, remember: smelly water is temporary, but a good story is forever. Once, my friend had well water that smelled so bad, visitors would think he was boiling eggs for breakfast—at 8 PM. He fixed it by replacing his anode rod, and now he brags about it at barbecues. You’ll be that person soon.
If you’re feeling overwhelmed, just boil the water for drinking or use store-bought bottles until the fix is done. Your taste buds will survive, and your water will eventually smell like nothing—which is actually the most beautiful smell in the world.