exhaust fan to remove ejector pump smell

[huskyfan68]

so our basement has full bath and plumber installed 2 sump ejector pumps (one for gray and one black water)-
When the toilet is flushed and the black well sump kicks in you get pretty nasty smell. (toilet empty)- We had plumber come and reseal tank lids and check for leaks- it's better but you can still smell. The 2 pumps are located in a small closet like area (maybe 2' by 10')-will little ventilation (the pumps are both vented to the roof properly)- Thoughts on install a bathroom type exhaust fan in that small room where pumps are and vent to the outside?. Pretty easy to do with full access to outside wall and power etc- looking for opinions on if anyone thinks will improve the situation or make worse?

 

[Twowaxhack]

I’d rather deal the basins if that’s the source but a fan couldn’t hurt, might not help.

 

[huskyfan68]

Sealed basins- tightened bolts- smell improved- checked all vents and discharge- don't see anywhere where it would be leaking- at least until we find the culprit- wondering if exhaust fan will at least help draw smell out- there is no air movement in there- agree with finding source

 

[Twowaxhack]

Find the source, that’s my official advice.

 

[huskyfan68]

got it- any other thoughts other than above where to look?

 

[Twowaxhack]

Turn all fans and hvac equipment off.

Use your eyes and nose to help find an open pipe, dry ptrap, bad wax under toilet, plug out of a clean out.

Those are all common things I find.