Popular Topics
Allergen
An allergen is a substance that triggers an allergic reaction in some people. Common indoor allergens include pollen, dust mites, pet dander and mold spores. When inhaled, these microscopic particles can irritate the respiratory system, causing symptoms like sneezing, congestion, itchy eyes, or asthma flare-ups — especially in individuals with sensitive immune systems.
Ion
Ions are tiny particles in the air that carry an electrical charge — either positive (+) or negative (–). In air purification, these ions are released into the air to attach to pollutants like dust, smoke, allergens, and even viruses. Once attached, they help clump these particles together, making them easier to remove from the air — or neutralizing them completely.
Odors
Odors are smells in the air caused by tiny particles or gases released from things like food, pets, smoke, mold, or even your trash can. These particles float around and can stick to furniture, walls, and fabrics — making your space feel less fresh. When we talk about air quality, odors are a sign that the air might be carrying unwanted or unhealthy substances.
PM 2.5
PM stands for particulate matter, which can also be called particulate pollution. It is a term which can include solid particles and liquid droplets found in the air. PM 2.5 describes fine inhabitable particles with diameters that are generally 2.5 micrometers (microns) or smaller. This can include common dust particles, allergens, debris, or any material of that size.
Viruses
Viruses, invisible threats in indoor air, are tiny germs that can hitch a ride on droplets when people cough, sneeze, talk, or even just breathe. These droplets can float around in the air — especially indoors — and be breathed in by others. That’s how illnesses like the flu, COVID-19, and the common cold can spread from person to person without direct contact.
Wildfire Smoke
Wildfire smoke is a mix of gases and tiny particles released when trees, grass, and other materials burn. It doesn’t just stay outside — smoke can drift for miles and easily seep into your home through windows, doors, and even ventilation systems. What makes it especially harmful is the fine particle pollution it carries, like PM2.5 (link to PM 2.5 topic page), which can get deep into your lungs and even enter your bloodstream.
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A
An allergen is a substance that triggers an allergic reaction in some people. Common indoor allergens include pollen, dust mites, pet dander and mold spores. When inhaled, these microscopic particles can irritate the respiratory system, causing symptoms like sneezing, congestion, itchy eyes, or asthma flare-ups — especially in individuals with sensitive immune systems.
O
Odors are smells in the air caused by tiny particles or gases released from things like food, pets, smoke, mold, or even your trash can. These particles float around and can stick to furniture, walls, and fabrics — making your space feel less fresh. When we talk about air quality, odors are a sign that the air might be carrying unwanted or unhealthy substances.
P
PM stands for particulate matter, which can also be called particulate pollution. It is a term which can include solid particles and liquid droplets found in the air. PM 2.5 describes fine inhabitable particles with diameters that are generally 2.5 micrometers (microns) or smaller. This can include common dust particles, allergens, debris, or any material of that size.
V
Viruses, invisible threats in indoor air, are tiny germs that can hitch a ride on droplets when people cough, sneeze, talk, or even just breathe. These droplets can float around in the air — especially indoors — and be breathed in by others. That’s how illnesses like the flu, COVID-19, and the common cold can spread from person to person without direct contact.