Retired Defense Industry Engineer xxx
- Reaction score
- New England
If it is installed properly, it's essentially like any sewer connection...you shouldn't smell anything because it should be vented, and a p-trap should prevent any smells from getting into the room. If there was not enough volume going into the trap, you might need a trap primer to keep it full, though. I would think that daily use would likely replace any that had evaporated.