This vent can not only get dirty but can be home to mold that has a terrible smell. Remove the vent and clean it with a combination of soapy water and vinegar.
Baking Soda: Sprinkle baking soda into the air ducts and leave it for a few hours before vacuuming it out. Baking soda is known for its odor-absorbing properties. Vinegar Solution: Create a solution of vinegar and water and spray it into the HVAC vents. Vinegar can help neutralize odor.
Clean the Vents
If blocked, the cooling process gets disrupted, resulting in uneven temperatures and inefficient cooling. To clean the vents, remove debris from the vent openings using a soft brush, like an old toothbrush, and soak removable vent parts (if any) in warm soapy water to clean later.
Locate the vents in the freezer and refrigerator compartments and ensure nothing is blocking the airflow. If vents are blocked, airflow will decrease. Temperature and moisture issues may arise due to blocked vents.
Sprinkle fresh coffee grounds or baking soda loosely in a large, shallow container in the bottom of the refrigerator and freezer. Place a cotton swab soaked with vanilla inside the refrigerator and freezer. Close door for 24 hours.
Mildew. Since your air conditioner dehumidifies the air as it cools, it's no surprise that mildew is the most common odor to come from an AC vent. If excess water collected from the air isn't drained away properly, the lingering moisture can allow mold and mildew to grow.
Can I spray vinegar in air ducts? Yes. Vinegar can help break up the dirt in the ductwork so that you can clean them more easily. Use a mix of ¼ cup of vinegar with 2 cups of water in a spray bottle.
The Best: Remodeez Aqua Refrigerator Deodorizer
This means that a single Remodeez will last much longer than anything full of baking soda (though the baking soda models can be refilled). Basically, you only need to replace it every six months—which is about five months and 27 days longer than your oldest leftovers.
Refrigerator smells come from either bacteria or mold, often from food spoilage or moisture buildup. The interior of the refrigerator is primarily made of plastic, and plastic absorbs odours. If the refrigerator is not regularly cleaned, it is most likely the reason why it smells.
Baking soda
Place baking soda inside an open container and let it unstink your fridge for 24 hours. With a few drops of essential oils, you have something that not only help to get rid of bad odors but also make your fridge smell good at the same time.
Solution: If you can smell gas coming from the fridge even when the fridge door is closed, call a technician! It could be a refrigerant leak or something not connected properly. Either way, it's best to get a professional's opinion.
Boiling vinegar can help to get rid of the lingering smell.
Use Baking Soda in Your Ductwork
Baking soda is an ideal fix for odor coming from air conditioning vents, as it naturally absorbs all sorts of smells. If the AC smells bad and the odors are coming from inside the ducts, you may have to put the baking soda inside the ductwork for maximum effectiveness.
Baking soda, formally known as sodium bicarbonate, is a quick and effective way to mitigate unpleasant odors circulating in your air vents. Baking soda is known for its ability to absorb and neutralize smells from food, pets, bathrooms, and smoke.
It is likely that the sweet smell you are noticing is a Freon (for older units) or Puron (for newer AC units) leak. These products have a sweet chloroform smell and when it leaks, it can fill the air with this sweet scent. You should have a professional inspect your air conditioner to determine if this is the cause.
What is formaldehyde? Formaldehyde is a colorless chemical with a strong pickle-like odor that is commonly used in many manufacturing processes. It easily becomes a gas at room temperature, which makes it part of a larger group of chemicals known as volatile organic compounds (VOCs).
Clean Out the Vents on Your Refrigerator
If it is blocked, you not only could get a smell but the temperature could be unreliable. Clean off the vent and ensure that food containers do to cover it. The second vent is under your fridge and it exhausts heat from the fridge's compressor.
A bowl of vinegar can start absorbing odors almost immediately and is typically adequate for up to 24 hours. When left out in a room, the acetic acid in vinegar neutralizes alkaline odors, such as those from smoke, cooking, or pet accidents, by binding with the odor molecules and neutralizing them.
You can also create a quick natural air freshener by combining baking soda, any essential oil, and water, simply placing a small bowl of it in your fridge. If none of these steps do the trick, your fridge may need a deep clean. The inside of most refrigerators are made of plastic, and plastic absorbs smells easily.