mkevenson
This is my 2nd TT. My 1st had a visible black water tank vent pipe coming up thru the floor and exciting the roof. I used a reputable smell killer in the tank and nary a worry.

My Retro 179SE has no visible vent pipe exiting the bathroom. I am assuming there is one hidden in the walls. I use the same odor chemicals and have a "smelly bathroom" Frequently.
I have read the common solutions like add more fresh water to the empty black tank. Turn on the bathroom fan OR do not turn on the bathroom fan! Change chemicals. Use a clothes pin on your nose!!!!!

Before I take my trailer to the dealer to see if there is problem with the black tank venting system, I thought I would ask if any of you have had a similar problem and if you have actually found a venting problem that could be corrected?
I can live with this but my wife..... that's another matter!!!  
Mark
Please buy Made in USA
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sunvalleyjoe
most of the Retro I have seen the pipe vents out the side. Not sure about the newer models. Our Jayco needed the seal in the bowl replaced it also has roof vent pipe. Good luck Joe .How was San Diego ? 70 deg in Reno today crazy weather.
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mkevenson
Joe ,  thanks. One rainy day out of 5. High 60s to low 70s. Slight breeze. We are headed to Joshua Tree tomorrow  for 2 nights, then on to Vegas for 2 ( in the neighborhood). One night near Sac then home for about 3 weeks.
Take care.
Mark
Please buy Made in USA
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sunvalleyjoe
on my way to Bishop Ca and Mt Whitney for a week have a good friend that lives there. Going fishing and bicycle riding.My BD on Monday 74 going to celebrate a lot. My wife is staying home with the dog and cat. Joe
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Dukeydrea
@mkevenson we have not done a lot of boondocking. ( Lots of dry camping ) but yes some odor. I assumed that it had to do with the warmer temps. We use a liquid  in the black tank. Having a 195 I m now curious about this. When you figure out where it is and/or if it can be address please update us 🙂🙃🙂
We are planning on doing more boondocking this year . Thanks in advance 
Andrea
Andrea
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sunvalleyjoe
hey Mark send a picture of side of trailer. My vent is just on the outside of the commode. Joe 
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TravelerGuy
Hi Mark,
We have a 2018 177SE, and there's a vent on top, just to the rear of the bathroom fan.  There's a cap over it to keep rainwater out.  Mine doesn't fit perfectly after I tried to remove it, but it's not a problem.  I think that if the cap were very tilted, the airflow while towing the TT might pressurize the tank and force smelly air out though the toilet seal.  Or maybe a real strong wind from the wrong direction.  Here's a photo.  The vent is between the bath fan and the main fan.
177SE-vent.jpg 
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TravelerGuy
I should add that we use ordinary black tank chemicals, and don't have any odor problems.  And also, the 179 has a different bathroom layout, and has a different black water tank (mine is 10 gal., yours is 17 gal.).  So maybe they had to do the tank venting differently on the 179.
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sunvalleyjoe
yeah that is it. The 150 and 155 are vented on the side not sure why they work but we have not had a issues. Like I told Mark our Jayco needed new seal in bowl. The water would slowly drain out so we replaced the seal took care of smell.GBA!!SVJ
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mkevenson
Andrea, we do not do a lot of boondocking either. Smells anywhere. 
Mark
Please buy Made in USA
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Tom
Just for the record, our old 155 has the vent on top like travler's pic.
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sunvalleyjoe
hey Mark there is an organic black tank product that works very well. I cannot remember the name but we tried it on bigger trailer and it worked great. Seems like when weather gets hotter that tank had to be cleaned more often. Good luck. Leaving Sat morning before the snow hits the area. Joe
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jackgomez
My 2015 155xl black tank/toilet is vented via a 2 inch pipe which runs inside the shower to the roof. The gray tank vents out the door side by the sink.
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Dukeydrea
@mkevenson I hope you figure it out sooner then later. Keep us posted. Safe travels
Andrea
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mkevenson
Seems it may be the seal between toilet and black tank. Had to call in a mobile repair yesterday after liquid appearedvon the floor. YUCK
Mark
Please buy Made in USA
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