There's a foul odor in our kids (teens) bathroom which I'm pretty sure is coming from the tub drain. We have some kind of domed cover over the drain most of the time to catch hair, but apparently it is sometimes removed. I already had one of them use this short, thorny plastic snake-like thing to reach down and pull out some hair and nastiness. But that's only about 18-24" and I wasn't there so don't know how far down she reached it. I also tried pouring some liquid plumber down it. But that was apparently very old, as it was kinda clumpy itself, although those clumps dissolved with hot water. Other notes:
- The tub drains fine, it is not clogged.
- The shower is used often
- The smell is not a sewer smell.
There is a shower vent, but I noticed it is quite clogged with dust, so I need to clean that, so maybe it's not venting very well. I've read other notes here and I think some were suggesting possibly mold or something growing in the vent, but I'm still pretty sure the smell is coming from the drain.
Any suggestions? Should I just do more snaking and another pour of fresh liquid plumber?