Why is my carpet having wet areas? One of my house rooms beside the bathroom has a damp, smelly wet area by the corner.

why is my carpet having wet areas? one of my house rooms beside the bathroom has a damp, smelly wet area by the corner.
Flooding perhaps? Is the room adjacent to the bathroom or a wall near an exterior gutter or downspout?
I don't know where you live, nor what your weather has been like.
You could have a leaky roof?

why is my carpet having wet areas? one of my house rooms beside the bathroom has a damp, smelly wet area by the corner.
This could be caused by a number of reasons. Is there a shower near the wall? Have you opened the access plate and checked the bathtub drainage? Is the moisture more when showering? In short, give us more details. Regards, tom,

Do you have pets that my be peeing on your carpet?
Or if you have children in the house maybe
They are spilling there drinks on the carpet.

Might be someone taking a shower and drying off in that area, but I'd be more inclined to think the pets, or a leaking pipe in one of the walls... all guesses of course.