: our plumber recently replace our hot and cold water lines. Since then, the water has a bad odor when it is hot or heated. The plumber says it is the flux and will go away soon. Thye water tastes bad too. Whats the story?I have made the mistake of using an old fitting that had been used on a gas line, i had to remove it in the end because of bad taste in the water.DISCLAIMERAll advice is given with-out seeing the job, and hence all advice MUST be taken as advice with limited knowledge on the exact situation. NO responsibility can or will be taken. And yes, I am a licensed plumber with my own business in Brisbane Australia