This has two methods of measuring moisture one is surface damp and one is below the surface damp.
Wiuld a roof smell lije fish.
Unless it is fish this strange smell is probably emanating from a burning electrical component.
Use your nose to determine which one it could be the drain of a toilet sink tub or shower.
Poor vaginal hygiene can lead to a buildup of bacteria in the vagina that can start to develop a fishy smell.
Your vagina might smell like fish if you have poor hygiene habits.
While it can be normal there are some instances where you should be concerned.
This sometimes is confused with the rotten egg smell but it s less eggy and more like the smell of an outhouse or a portable toilet.
Going down the wrong path when investigating such an issue can be very dangerous if the cause of fish smell in your home is overheating electrical system components.
Damp affects materials in different ways and produces different smells but generally fish or mouldy smells apply.
Electrical shielding wires and other plastic components emit a fish or urine smell when exposed to high heat.
It probably is coming from a drain.
What you need is a company with a damp meter.
Urine usually has an odor and sometimes it can resemble a fish smell.
Amanda oakley on dermnetnz says that vaginal malodor can be the result of poor hygiene.