Smell in living room after shower

[Unregistered]

Can anyone explain why there is a musty smell in my living room after I have used the shower? There is no smell in the bathroom and the smell in the living room goes away after 1-2 hours. There doesn't appear to be any dampness on the adjoining wall between both rooms or on the living room floor.
I would be grateful for any suggestions.
Thanks

 

[Riley]

Any boxing in the living room maybe containing the soil pipe

 

[Riley]

Also sorry please register with us for additional answers

 

[PlumbBobBob]

as said, please register with us and repost to receive answers