Why Does my Hot Water Smell Like Onions?

If your hot water smells like onions, it can be caused by different factors. Here is a list of the main factors:

  • A prolonged absence can dry out the pipes and lead to onion and sewer odour
  • A clogged drain
  • Incorrect temperature setting of the water heater that causes bacteria to grow
  • The metal in the water heater tank

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