URGENT HELP NEEDED - MAJOR SMELL FROM BATHROOM

If bathroom roof vent open it might be coming in that way

Smart! I'll do that and get back to you. It's windy tonight.

Thanks.

we used a a couple cups of borax and a cup or 2 of cheap liquid laundry detergent in about a gallon of water each time we dump the tanks and start off empty. This works very well to keep smells down or non existent.
if you are running a/c, check to see if the return air is sucking air from the bathroom.

Can you see bolts or nuts around the base of the commode? If so see if one or more is loose. If so tighten them up so they are evenly tight. This might pull the commode down on the seal. Don't overdo it.

Is there a check valve for the black tank vent?

Is there a check valve for the black tank vent?

Change your diet????? Beans cause that smell....lol

UPDATE

TexasShadow:
I always use Camco orange RV black tank concentrated treatment after emptying both tanks. We started our stay on empty tanks. NO AC or fan used tonight. Thanks!

Copeland :
I have closed the vent. Odour seems to be less strong. Waiting to see… Thanks!

Weldon:
Bolts at the base are tight.

But when you say:
Is there a check valve for the black tank vent?
What am I supposed to be looking for, and where?

SidecarFlip:
Hmmm… good point. I had baked beans at lunch time, and chili for supper. You think this could be the reason??? LOL

Tonight is quite windy (no pun intended) outside. I could very well be that the bathroom vent was picking up the smell from the black tank vent, pushed by the wind. I closed the bathroom vent 35 min ago, and it seems to be smelling less… but not 100% (my nose is probably playing tricks on me).


Other opinions are still welcome. Thanks all for coming to my rescue.

Its the wind blowing down your vents. Pushing bad smells into the trailer.

You could go put heavy bowls over the vents for a temp fix. Put something under the bowl so it can still vent.

Be careful it's no joke up there.

Wopachop:

It's 1:00 a.m. now, and I'm afraid of heights... I will pass as for putting heavy bowls over the vents! LOL

"Be careful it's no joke up there."

I know! I installed the MaxAirs last summer, one being next to the black tank vent. That - added to my fear of heights - made for an unpleasant chore!

Thanks for the reply!