Rotten Egg Smell in Houseplants: Overwatering Diagnosis

Sulfurous "rotten egg" smell = anaerobic soil bacteria from chronic overwatering. Repotting with fresh soil won't help if watering habits don't change.

The Cause

Multiple people watering "just in case" keeps soil saturated. Oxygen-deprived bacteria produce hydrogen sulfide. Roots rot, smell worsens.

The Fix

1. Repot once more in high-quality, well-draining potting mix.
2. Water ONLY when soil is dry to touch (finger test 1–2 inches deep).
3. Designate ONE waterer. No "check and water" by committee.
4. Ensure pots have drainage holes; empty saucers.

Prevention

Use moisture meter if unsure. Most houseplants die from kindness (water), not neglect.