Drain odours and returning smells after rainfall, often point to pressure changes in drainage systems, not surface hygiene.
Why rain affects indoor smells and drain odours
- Sewer systems surcharge
- Air is pushed back through drain seals
- Debris is disturbed in chambers
Common fault points
- Dry or failed traps
- Partial blockages
- Damaged ventilation pipes
Drain odours: When smells indicate a serious issue
Persistent drain odours usually require professional investigation, not air fresheners.Don’t cover up the bad smell get Drain Wizard in to help sort the drain odours now.

