How do you wear the O2 Nose Filters?

1. With clean hands remove the filter from the travel case.

2. Gently place the filters in the nose with the curvature facing towards you. Feel free to adjust the angle and depth in each nostril for optimal comfort.

3. Enjoy cleaner air and easier breathing with up to 60% more air flow!

To remove the filters, gently pull the connecting band. Do not use if this is broken.

For best results, we recommend blowing your nose prior to inserting your O2 Filters.

What are the O2 Nose Filters Made Of?

The 3M Filtration media is set in a soft, clear rubber form. They are latex and drug free.

What size am I?

Noses come in many shapes and sizes, so we offer four different sizes:

  • Extra Small
    for young children, or also known as Asian Small
  • Small
    for older children and small adults, also known as Asian Medium
  • Medium
    for most adults, also known as Asian Large
  • Large
    for larger adults and most men, also known as Asian X-Large

Once you have the right size, the filter will conform to the inside contours of your nose to maximize comfort and protection.

How long can I wear O2 Nose Filters?

The O2 Nose Filters designed for up to 12 hours of use, however in dusty or especially polluted environments you may need to change your O2 filters more often. It is important to use the right size and for optimal comfort and protection.

Can I use my O2 filters more than once?

The O2 Nose Filters are designed for one-time use up to 12 hours. Re-use is not recommended for hygienic reasons unless worn for a very short time.

O2 filters protect my nose but what about my mouth?

The good news is that the acids in saliva effectively neutralize most of the bad stuff that gets into your mouth. Your warm, moist nasal and sinus cavities are the most important place to protect as this is where germs, viruses and bacteria tend to lodge and multiply. So, once you have your O2 filters in place try to breathe through your nose as much as possible to take advantage of the protection the O2 filters provide – and it’s healthier too!

Do O2 Nose Filters prevent snoring?

The O2 Nose filters improve airflow up to 60%. By opening the nasal channel they have been proven to reduce snoring by supporting the tissues in the nose that relax and vibrate during sleep.

Increased airflow can also improve athletic performance during exercise and when suffering from congestion.

Are the O2 Nose Filters Drug Free?


They do not have any medicine and we recommend them to be worn as a preventative measure against the symptoms of airborne pollutants so you don’t need any medication thereafter either. Hopefully.

Where can I buy O2 Nose Filters?

They are soon to be available here on the O2 website, Amazon, in pharmacies and retail chains around the world. Click here for an updated list of retailers.

Bulk packaging for professional and industrial use is also available. If you are interested please email us at

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Why should I wear O2 Nose Filters?

O2 Nose Filters capture up to 99% of all harmful airborne particles down to less than 2.5 microns in size. This means they protect against and provide relief from the symptoms caused by:

  • Pollen, Pet Dander and Other Allergens
  • Viruses and Bacteria
  • Pollution
  • Dust, Spores, Mist and More

Where should I use O2 Nose Filters?

The easy answer is anywhere there is something in the air that you don’t want to breath into your sinus cavities and lungs. But here are some specific suggestions:

  • Anytime there are allergens in the air that affect you, ie: pollen, grass, pets, etc.
  • Whenever there’s air pollution.
  • In work environments where there is dust and debris in the air.
  • Whenever you are on an airplane, train, bus, or any crowded space where you want to protect yourself from the viruses and germs of the person coughing nearby.
  • Anytime you are using cleaning products.
  • At the dentist so you don’t breathe in everything the drills and lasers are aerosolizing.
  • Anytime you visit places like hospitals where there are sick people.
  • Police, military or anyone who shoots at a gun range and is concerned about breathing in the lead dust in the air.
  • Hospital and dental professionals, aid workers, construction workers, etc.

What are the benefits of using O2 versus medications?

Why take medication to solve a health problem if you can prevent it in the first place? O2 provides natural relief without any side effects.

What is the difference between O2 and nasal strips?

Nasal strips increase airflow but O2 filters are at least 38% more effective. There are also many more benefits, read on below:

  • O2 Nose Filters are practically invisible while nasal strips look like a strip of tape across the top of your nose.
  • Nasal strips don’t provide any filtration protection.
  • Wearing O2 filters are more comfortable for most people than a piece of tape on top of the nose.
  • Some people are allergic to the adhesive on nasal strips while O2 filters are made with latex and drug-free materials.

Why is O2 better protection than wearing a surgical mask?

There is a widespread misconception that surgical masks protect the wearer from whatever is in the air around them, however surgical masks are primarily designed to protect others from the person wearing the mask. For example, if a doctor coughs while performing surgery, his mask primarily protects the patient from infection – Read this excerpt from 3M.

Other cons of surgical masks to keep in mind include:

  • Do not provide a complete seal.
  • Are not discreet to wear in public.
  • Are warm and uncomfortable in hot or humid environments.
  • Muffle the voice and inhibit conversation, so many people, including medical personnel, pull them down while talking leaving them without protection.

Should dental professionals and patients consider wearing O2 nasal filters?

Many procedures performed by the dental team have the potential to create aerosols containing microbes from the oral cavity. Aerosols are tiny particles or droplets which can float in the air for considerable time before being inhaled by dental staff and patients. These aerosols are contaminated with microorganisms and blood and thus represent an infection hazard. A 400% increase of airborne bacteria has been observed in areas where aerosol producing equipment was used.

It is likely that the use of ultrasonic scalers is the most significant source of airborne microbial contamination. Numerous airborne particles derived from blood, saliva, tooth debris, dental plaque, calculus and restorative material are produced by an ultrasonic scaler when used in combination with water spray. The level of aerosol contamination during this type of treatment is three times higher than during other dental treatments.

Aerosols don’t just stay in the operatory. They travel throughout the entire office. Everyone in a dental office is breathing air contaminated by microbes, detergents, solvents, particulates, and metals.

Messano GA, Sofan AA, Petti S. Quality of air and water in dental healthcare settings during professional toothcleaning. Acta Stomatol Naissi. 2013;29(67):1230-1235.

Desarda H, Gurav A, Dharmadhikari C, Shete A, Gaikwad S. Efficacy of high-volume evacuator in aerosol reduction: truth or myth? a clinical and microbiological study. Journal of dental research, dental clinics, dental prospects. 2014;8(3):176.

Guignon AN. Dental Germaphobics: When patients are not ‘crazy’. RDH Magazine;2015.

Is O2 a better option for construction workers than disposable face masks?

In many work environments employers are required to provide workers with breathing protection.  However, there is typically low compliance because workers dislike wearing disposable face masks.  Disposable face masks quickly get hot.  They are uncomfortable.  They can uncomfortably restrict airflow when workers are breathing hard during exertion.  They inhibit communication.  So, all too often workers don’t wear their masks and remain unprotected from dust and other pollutants. 

O2 nose filters offer substantially better protection than disposable masks, are comfortable, actually enhance airflow, don’t inhibit conversation, and are practically invisible.  Workers greatly prefer O2 versus traditional disposable masks, thus compliance dramatically improves.  Breathing protection only works if users wear it.


What size particles will the O2 filters protect me from?

The filtration efficiency of the 3M material varies based on the size and speed of the particles – testing of the O2 Nose Filters demonstrate better than 70% efficiency at 2.5 microns and over 90% at 10 microns.

  • Pollen varies from 10–100 microns, filtration efficiency is 90–100%.

  • Pet Dander varies from 1–9 microns, filtration efficiency is 45–90%.

  • Bacteria varies from .1–10 microns, filtration efficiency is 25–90%.

  • Mold Spores vary from 10–30 microns, filtration efficiency is 90–100%.

  • Saw Dust varies from 30–600 microns, filtration efficiency is 99–100%.

  • Smog varies from .01–10 microns, filtration efficiency is 15–90%.

  • Diesel exhausts vary from .05–1 microns, filtration efficiency is 25–40%.

* The above tests were conducted at LMS Technologies, an independent 3rd party testing lab.

Read more about The Condensation Effect, Particle Size and O2 Filtration Efficiency on our Environment page.

What size particles are considered to be hazardous for humans?

• Inhalable Dust: Airborne particles which can enter the nose and mouth during normal breathing. Particles of 100 microns diameter or less.

• Thoracic Dust: Particles that will pass through the nose and throat, reaching the lungs. Particles of 10 microns diameter and less. Referred to as PM10 in the USA.

• Respirable Dust: Particles that will penetrate into the gas exchange region of the lungs. A hazardous particulate size less than 5 microns. Particle sizes of 2.5 micron (PM2.5) are often used in USA

What is the “Condensation Effect” and how does it help O2 nose filters become even more effective?

All airborne contaminates can be expected to, depending on the atmospheric conditions, take on some water vapor. This is called the “Condensation Effect.” The higher the humidity the more significant it becomes until contaminates trapped in the water, now a fog, mist or larger droplets, fall to the earth.

As they absorb water, the very smallest particulates increase their perceived size by at least 80%.  As they continue to absorb moisture their size can increase to more than 1000% of their original dry size.  For example, a particle that is 2.5 microns when dry will be filtered wet at a minimum of approximately 4.5 microns in size and can become far larger.

This “Condensation Effect” significantly increases the effectiveness of the 3M filtration material by enlarging the size of particles that otherwise would pass through more easily.  Airborne viruses and bacteria (2 microns and larger wet) need moisture to live and are released into the air in water droplets, often via sneezing and coughing.