Sounds like you main drain is leaking in the basement.
It depends what you mean. If you mean how long it takes to get an odor, then it make take a couple of hours to start smelling.If urine is in a toilet, it will stink until you flush it. Sometimes there will be an odor after you flush, and it might be time to clean the toilet. If it is in your clothes, then the smell will remain until you wash them.
I had this problem too. Just pour bleach in toilet and flush.
If they are not cleaned weekly they will, but if you didn't flush your toilet for a week it would smell bad too. ha ha. But mice do have a lower odor than some rodents such as ferrets.
* Could be a clocced pipe, so that when you flush sewage backs up somewhere and you smell the odor. * Possible leak at wax seal. improperly vented or if you have a fixture that isn't being used the trap may be dry. pour water in sinks, tubs, showers.
Odors effect sensitive membranes in your nose. Each odor has a unique effect on your nose and your body absorbs the essence of the odor through particulates caught in your nose. When you smell, for instance, a clogged toilet your nose is catching small particles floating in the air around the source. The body creates saliva and some mucous to flush out some of the particles, dulling the sense briefly and reducing the odor. It's sort of your nose's gag reflex.
The toilet (WC) has a terrible odor.
It can stink if it is not flushed or it is dirty. In some cases, there could be a leak at the base, and the standing water around the toilet has an odor.
Check the venting
Briar Cook has written: 'Guidelines for selecting an odor-free toilet' -- subject(s): Sanitary engineering, Toilets, Odor control, Design and construction
sounds like the wax ring did not take or the flange is not set right
Sure: The stench of the floater in the toilet was a formidable odor preventing me from entering the campground restroom.
Yes, but not in the way we think of flushing toilets. In private houses, a bucket or two of water was used to flush away the waste and prevent odor. In the public toilets latrines, there was a stream of running water beneath the seats to flush away waste.