Antony Jordan
Nick hi. What kind of shower is it, elec or tank fed. First check waste pipe for smells by pouring a bucket of hot water down the plug. If electric shower are the cables big enough to take the watts that the shower pulls.? open box and see if any over heating. If tank fed is your header tank clean is there anything in there that could affect the water when heated, take some out and heat it on the cooker to see if you get any smells, don't take from the kitchen tap because that's main fed take it from the tank it self. With out more info that's all the help i can give. Regards Tony
