adam russell wrote:

Ok thanks. But just to be clear, it smells to me like chemical smell,
not sewer smell. I wouldnt have thought that it came from the toilet.
You still think yea?

Here are the bathroom smell sources that come to my mind:

* Sewer gas -- Check for leaky pipes or water evaporated from traps. Be
sure to check the vent stack; it might be leaky or even plugged.

* Sulfurated water (rare) -- Get on city water or buy a filter.

* Contaminated water (*very* rare) -- Get your water tested, then get
ready for long-term trouble.

* Something in or on the wall -- Check the other side of all the walls,
in the attic, and in the basement. Maybe someone spilled a little gasoline
in the garage.

* Personal care or cleaning products (*very* common) -- Check the bottom
of the sink cabinet. Maybe someone spilled some hair coloring or cleaning
products.

* Pesticides -- Did you have an exterminator in recently? Sometimes the
smell comes back with weather changes.

* Dietary issues -- Human smells can be surprisingly varied. You're on
your own with this one.

I don't think anyone mentioned the vent stack yet, so there's something to
check. You can run a garden hose down from the roof.

--
Steve Bell
New Life Home Improvement
Arlington, TX