Why does my tap water sometimes smell like garlic? Had this issue for a couple of weeks over the summer; interesting to know the probable culprit. #link You were reading Why does my tap water sometimes smell like garlic?, a link posted with comment by MacDara Conroy. It is filed under Aux and was published in December 2017. If you liked what you read here, you can follow this site on Twitter @MacDaraBlogs or via reader feed, and find many more entries in the Archive. Tags: chemistry, science Share this entry on Twitter, Tumblr, Facebook or Google+, or by email.