Why Does My Bathroom Smell Like Mildew?

Bathrooms have an abundance of moisture, creating the perfect environment for fungal growth and a mildew smell. That musty odor can be frustrating, unpleasant, and even unhealthy. There are several possible reasons why your bathroom smells like mildew. We’ll explain the potential causes and steps you can take to address them.

What Does Mildew Smell Like?

The smell of mildew is often described as damp, stale, and earthy—similar to wet towels or old books. It’s caused by fungi growing and releasing spores into the air. These spores can trigger allergic reactions and respiratory problems (similar to mold exposure), making it important to identify and eliminate the source of the odor promptly.

Potential Causes of Bathroom Mildew

Several factors can contribute to the development of mildew. Here are some common causes:

• High Humidity: Mildew thrives in damp, humid environments. Moisture from water, steam, and condensation creates the perfect breeding ground. This is especially concerning if you don’t have an exhaust fan or dehumidifier.
• Plumbing Leaks: A leaking pipe, faucet, or showerhead can also cause mildew growth. Water leaking behind walls or under sinks creates the ideal environment as well. Even the smallest of leaks can provide enough moisture for fungi.
• Poor Ventilation: Without airflow to dry out the excess moisture, a bathroom becomes a haven for mildew. Humidity from daily showers and baths must be vented out. Otherwise, it can keep the air damp for extended periods.
• Damp Items: If shower curtains, towels, or bath mats aren’t properly dried after use, they can hold onto moisture and start to develop mildew. Be sure to wash these items regularly and allow them to dry completely.

How to Get Rid of a Mildew Smell

Once you’ve identified why your bathroom smells like mildew, follow these steps to address the problem:

• Increase Ventilation: Open windows when possible, and make sure your exhaust fan is working properly. Good air circulation helps reduce odors and humidity.
• Fix Leaks Immediately: If you suspect a leak, have it repaired as soon as possible. Call a plumber who is trained and equipped to handle the problem.
• Clean Surfaces Thoroughly: Effective cleaning solutions include a mildew remover, white vinegar and water, or vinegar and baking soda. Be sure to scrub down tile grout, shower curtains, and other porous surfaces.
• Replace Affected Items: Items that can’t be thoroughly cleaned should be discarded. These include heavily mildewed carpets or shower liners.
• Use a Deodorizer: Once the mildew is removed, use a bathroom-safe deodorizer or an essential oil diffuser to keep the air fresh. This helps eliminate any lingering odors.

FAQs

How do I find the source of a musty smell?

Check for visible signs of water damage or leaks under the sink, behind the toilet, or around the shower. If you can’t locate the source of the smell, contact a plumber who can assess the issue more thoroughly.

How do I fix the mildew smell in my bathroom?

To fix the mildew smell, you’ll need to target its source. Install a bathroom fan (to reduce moisture levels), repair any leaks, and clean affected areas. If necessary, replace contaminated items.

Are bathroom mold and mildew the same thing?

Mildew usually looks like flat, powdery spots, while mold tends to have a fuzzy, raised appearance. However, some types of mildew are mold—both thrive in damp environments and spread if left unchecked.

Contact Lynch Plumbing for Expert Help

If you can’t find the source of a bathroom smell or suspect a leak or other plumbing issue, contact Lynch Plumbing. Our experienced team provides leak detection and repair services for homeowners in Los Angeles, Ventura County, and the San Fernando Valley. We ensure your bathroom is safe and odor-free. Don’t let mildew take over your home—call (818) 773-9514 today for fast and reliable service!