I live in a manufactured home. About 4 weeks ago we started to have a bad smell coming from one of our bathrooms. We thought the smell was from a toilet leaking, so we removed the toilet and reset it. I don't think that is where the smell was coming from. I have heard it's very bad to disrupt the waterproof barrier under the house. Should I break through the floor? Should I tear through the barrier under the house? If I do go through the barrier, how hard is it to repair it? I must find out where the smell is coming from.
Is there an accessable crawl space underneath the home, that you can get to? That would be the first place I might possibly be looking. Either for a drain line that is damaged or an animal crawled under and died?
ok you said 'one of our bathrooms'... is this bathroom used frequently? if not, make sure all the traps are filled with water.
Traps can dry out if you do not use a bathroom fairly regularly and if they do, they will let sewer gas into the room and it can be deadly.
Also, if you flush the toilet in the bathroom, have some one watch the other traps in the room and see if the water 'fluctuates', if they go down, then this could be a plugged up vent on the roof (birds and squirrels love to build nest in these pipes and they block the gas from coming up and create a vacumn when water flows down any drain in the room, thus vacumning out the other traps).