bad smell from shower plug hole....

[My Angel Pie]

hi guys, over the past week or so there has been an awful pong which is coming up from the shower plughole. I have tried 2-3 types of these bathroom plug/pipe cleaners, they do diminish the pong slightly, i wondered if there is a 'trap' within the pipes that is causing the problems, if a trap was fitted - where would it be and how would it fixed, also could you answer with any other ideas to this problem. thanks in advance.

[terence7556]

if your shower is raised a little, say 200mm, then the trap is behind the panel that covers the gap, like a shortened version of a bath panel.if not then its a shallow trap under the floorboards and there is no easy way around ir.
i had this in an ensuite in the last house where the shower and a hand basin shared the waste outlet at a tee and this gunged up with hair(10 yrs worth)and the only way was to locate it ,split it and clean it out, about half a cup of gunk/hair etc.
the signs were smells,not too bad but it took ages to drain the water after a shower and a glug glug noise sometimes as one waste slowed the flow of water from the other. i notice it now in my new home at the sink where the whiff of smells can be bad. too many outlets sharing the waste pipe resulting in trap seal loss as one emptying can pull the water from the main trap and allow odours back up the plughole. in this case i will install extra wastes but you will have to get some floorboards up or rod it with a flexible rod down the plughole (looks like old fashioned curtain wire, stiff but flexible)