{"id":522,"date":"2026-04-22T10:42:44","date_gmt":"2026-04-21T22:42:44","guid":{"rendered":"https:\/\/geckogullydemos.com\/mjr\/?post_type=mjr-faq&p=522"},"modified":"2026-05-21T13:44:50","modified_gmt":"2026-05-21T01:44:50","slug":"smelly-drain","status":"publish","type":"mjr-faq","link":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/","title":{"rendered":"Why does my drain smell bad?"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"

Smelly drain in Christchurch? Learn what causes bad drain odours and how to fix them before they become a bigger maintenance issue.<\/p>\n","protected":false},"featured_media":227,"parent":0,"menu_order":0,"template":"","meta":[],"categories":[8],"tags":[145,17,146,21,147,74],"class_list":["post-522","mjr-faq","type-mjr-faq","status-publish","has-post-thumbnail","hentry","category-blocked-drains","tag-bad-drain-smell-christchurch","tag-blocked-drains-christchurch","tag-drain-odour-christchurch","tag-plumbing-maintenance-christchurch","tag-sewer-smell-christchurch","tag-smelly-drain-christchurch","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"yoast_head":"\nWhy does my drain smell bad? - MJ Robertson Plumbing and Gas<\/title>\n<meta name=\"description\" content=\"Smelly drain in Christchurch? Learn what causes bad drain odours and how to fix them before they become a bigger maintenance issue.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why does my drain smell bad? - MJ Robertson Plumbing and Gas\" \/>\n<meta property=\"og:description\" content=\"Smelly drain in Christchurch? Learn what causes bad drain odours and how to fix them before they become a bigger maintenance issue.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/\" \/>\n<meta property=\"og:site_name\" content=\"MJ Robertson Plumbing and Gas\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-21T01:44:50+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/geckogullydemos.com\\\/mjr\\\/mjr-faq\\\/smelly-drain\\\/\",\"url\":\"https:\\\/\\\/geckogullydemos.com\\\/mjr\\\/mjr-faq\\\/smelly-drain\\\/\",\"name\":\"Why does my drain smell bad? - MJ Robertson Plumbing and Gas\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/geckogullydemos.com\\\/mjr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/geckogullydemos.com\\\/mjr\\\/mjr-faq\\\/smelly-drain\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/geckogullydemos.com\\\/mjr\\\/mjr-faq\\\/smelly-drain\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/geckogullydemos.com\\\/mjr\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/MJ.png\",\"datePublished\":\"2026-04-21T22:42:44+00:00\",\"dateModified\":\"2026-05-21T01:44:50+00:00\",\"description\":\"Smelly drain in Christchurch? 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Learn what causes bad drain odours and how to fix them before they become a bigger maintenance issue.","og_url":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/","og_site_name":"MJ Robertson Plumbing and Gas","article_modified_time":"2026-05-21T01:44:50+00:00","twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/","url":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/","name":"Why does my drain smell bad? - MJ Robertson Plumbing and Gas","isPartOf":{"@id":"https:\/\/geckogullydemos.com\/mjr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/#primaryimage"},"image":{"@id":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/#primaryimage"},"thumbnailUrl":"https:\/\/geckogullydemos.com\/mjr\/wp-content\/uploads\/2026\/04\/MJ.png","datePublished":"2026-04-21T22:42:44+00:00","dateModified":"2026-05-21T01:44:50+00:00","description":"Smelly drain in Christchurch? Learn what causes bad drain odours and how to fix them before they become a bigger maintenance issue.","breadcrumb":{"@id":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/#breadcrumb"},"inLanguage":"en-NZ","potentialAction":[{"@type":"ReadAction","target":["https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/"]}]},{"@type":"ImageObject","inLanguage":"en-NZ","@id":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/#primaryimage","url":"https:\/\/geckogullydemos.com\/mjr\/wp-content\/uploads\/2026\/04\/MJ.png","contentUrl":"https:\/\/geckogullydemos.com\/mjr\/wp-content\/uploads\/2026\/04\/MJ.png","width":535,"height":487},{"@type":"BreadcrumbList","@id":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/smelly-drain\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/geckogullydemos.com\/mjr\/"},{"@type":"ListItem","position":2,"name":"MJR FAQs","item":"https:\/\/geckogullydemos.com\/mjr\/mjr-faq\/"},{"@type":"ListItem","position":3,"name":"Why does my drain smell bad?"}]},{"@type":"WebSite","@id":"https:\/\/geckogullydemos.com\/mjr\/#website","url":"https:\/\/geckogullydemos.com\/mjr\/","name":"MJ Robertson Plumbing and Gas","description":"Your Property Partner Across Christchurch - Day or Night Since 1955","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/geckogullydemos.com\/mjr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-NZ"}]}},"ptb_metabox":{"ptb_mjr_service_text_1":"<p><strong>TL;DR:<\/strong> A smelly drain in Christchurch is usually caused by trapped debris, grease build-up, dry traps, or a developing blockage. If the smell keeps coming back, it may indicate a deeper drainage issue.<\/p>\r\n<h2>What causes bad drain smells<\/h2>\r\n<p>Unpleasant smells coming from a drain are a common maintenance issue in Christchurch homes and buildings.<\/p>\r\n<p>In most cases, the smell is caused by organic material breaking down inside the pipes or by sewer gases escaping where they should not.<\/p>\r\n<h3>Common causes include:<\/h3>\r\n<ul>\r\n<li>Food waste or grease trapped in kitchen pipes<\/li>\r\n<li>Hair and soap build-up in bathroom drains<\/li>\r\n<li>Dirt and debris sitting in outdoor drains<\/li>\r\n<li>Dry water traps allowing smells to rise<\/li>\r\n<li>Partial blockages holding stagnant water<\/li>\r\n<\/ul>\r\n<p>Even a small amount of trapped material can create a noticeable odour.<\/p>\r\n<h2>How smells develop over time<\/h2>\r\n<p>When waste sits inside a pipe, it begins to break down. This produces gases that can travel back up through the drain.<\/p>\r\n<p>If the system is working properly, water traps and pipe design prevent these smells from entering the building. When something is not working as it should, the smell becomes noticeable.<\/p>\r\n<p>That is why drain odours often appear alongside slow drainage or early blockages.<\/p>\r\n<h2>The role of the water trap<\/h2>\r\n<p>Every drain has a curved section of pipe known as a trap. This holds a small amount of water, which acts as a seal to stop sewer gases coming back into the building.<\/p>\r\n<p>If that water dries out, the seal is lost.<\/p>\r\n<p>This can happen in:<\/p>\r\n<ul>\r\n<li>Rarely used sinks or showers<\/li>\r\n<li>Floor drains in garages or basements<\/li>\r\n<li>Properties that have been vacant for a period of time<\/li>\r\n<\/ul>\r\n<p>In these cases, simply running water can sometimes restore the seal and remove the smell.<\/p>\r\n<h2>When a bad smell points to a blockage<\/h2>\r\n<p>If the smell keeps returning, it may be linked to a developing blockage.<\/p>\r\n<p>Warning signs include:<\/p>\r\n<ul>\r\n<li>Slow draining water<\/li>\r\n<li>Gurgling sounds in the pipes<\/li>\r\n<li>Smell getting stronger over time<\/li>\r\n<li>Multiple drains affected<\/li>\r\n<\/ul>\r\n<p>This often means waste is sitting in the pipe instead of flowing away properly.<\/p>","ptb_mjr_ask_mj":"<p><strong>\u201cIf you can smell it, something is sitting where it shouldn\u2019t be.\u201d<\/strong><\/p>\r\n<p>Drain smells are usually a sign of build-up or poor flow. Sorting the cause early can prevent a more serious blockage later.<\/p>","ptb_mjr_service_text_2":"<h2>How MJ Robertson approaches smelly drains<\/h2>\r\n<p>MJ Robertson is a maintenance company specialising in plumbing across Christchurch.<\/p>\r\n<p>When investigating drain odours, the focus is on identifying where the smell is coming from and why it is happening.<\/p>\r\n<p>This may involve:<\/p>\r\n<ul>\r\n<li>Checking for build-up inside the pipe<\/li>\r\n<li>Looking for early signs of a blockage<\/li>\r\n<li>Confirming that traps and drainage systems are working correctly<\/li>\r\n<\/ul>\r\n<p>The goal is not just to remove the smell, but to address the underlying maintenance issue.<\/p>\r\n<h2>When to get it checked<\/h2>\r\n<p>It is worth getting the drain looked at if:<\/p>\r\n<ul>\r\n<li>The smell does not go away after cleaning<\/li>\r\n<li>The odour keeps coming back<\/li>\r\n<li>There are other signs of drainage problems<\/li>\r\n<li>The smell is strong or affecting multiple areas<\/li>\r\n<\/ul>\r\n<p>Dealing with the cause early can prevent more disruptive issues later.<\/p>\r\n<h2>Final thought<\/h2>\r\n<p>A smelly drain in a Christchurch property is usually a sign that something is not flowing as it should.<\/p>\r\n<p>Taking action early can keep the system working properly and avoid more serious maintenance problems.<\/p>"},"ptb_taxonomy":{"category":[{"term_id":8,"name":"Blocked Drains","slug":"blocked-drains","term_group":0,"term_taxonomy_id":8,"taxonomy":"category","description":"Blocked drains are a common issue in Christchurch homes. 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