You’ve just finished cooking a fragrant curry, your dog has claimed the sofa as his own, or perhaps there’s a lingering mustiness in the basement that no amount of cleaning seems to fix. Whatever the source, stubborn household smells are one of the most frustrating aspects of indoor living — and one of the most common questions homeowners ask is simple: will an air purifier get rid of smells?
The short answer is yes — but with some important nuances. Not all air purifiers are equally effective at tackling odours, and not all smells respond to the same technology. Understanding how air purifiers work and which type is right for your specific smell problem can make the difference between genuinely fresh air and simply masking the problem.
At Indoor Hygenics, we help homeowners across Canada and London breathe cleaner, fresher air every day. In this complete guide, we’ll answer the question once and for all — and show you exactly how to choose the right air purifier for smells in your home.
How Do Smells Work Indoors?
Before diving into air purifiers, it helps to understand what you’re actually dealing with. Household odours are caused by volatile organic compounds — commonly known as VOCs — as well as gases, particles, and biological matter that become airborne and circulate through your home.
Common sources of indoor smells include:
- Cooking odours — especially strong spices, fish, fried foods, and burnt food
- Pet smells — dander, fur, and the unmistakable scent of a wet dog
- Mould and mildew — a damp, musty odour common in basements, bathrooms, and older homes
- Tobacco smoke — one of the most persistent and difficult odours to eliminate
- Garbage and waste — especially in kitchens and utility rooms
- Chemical odours — paint, cleaning products, and off-gassing from new furniture
- Body odour — particularly in bedrooms, gyms, or enclosed spaces
In Canada and London, where homes are well-sealed against cold and damp weather for much of the year, these smells can become particularly concentrated — making effective odour control an even more pressing concern.
Will an Air Purifier Get Rid of Smells? The Science Explained
Yes — but the effectiveness depends entirely on the type of filtration technology your air purifier uses. Here’s the key distinction:
HEPA Filters — Effective for Particles, Not Odours
A True HEPA filter is the gold standard for capturing airborne particles — dust, pollen, pet dander, mould spores, and bacteria. However, HEPA filters alone are not designed to capture gaseous odour molecules. They trap particles, not VOCs.
So if your smell problem is caused by pet dander or mould spores, a HEPA filter will help. But for cooking smells, smoke, or chemical odours — you need something more.
Activated Carbon Filters — The Key to Odour Elimination
This is where activated carbon (also called activated charcoal) filters come in. Activated carbon is a highly porous material that chemically adsorbs — literally traps and binds — gaseous odour molecules as air passes through it.
An air purifier for smells that includes an activated carbon filter is specifically designed to tackle:
- Cooking odours and food smells
- Pet odours
- Tobacco and smoke smells
- Chemical VOCs and off-gassing
- Musty, mouldy odours
- Garbage and waste smells
The thicker and denser the activated carbon layer, the more effectively it will capture and hold odour molecules over time.
UV-C Light and Ionisers
Some air purifiers also include UV-C light or ionisation technology, which can help neutralise bacteria and mould that contribute to odours. These technologies work best as a complement to HEPA and activated carbon filtration rather than as standalone odour solutions.
Does an Air Purifier Help With Smells in Every Room?
A common question homeowners ask is: Does an air purifier help with odours throughout the home? The answer depends on placement, room size, and the source of the smell.
Best Rooms for an Air Purifier for Smells
Kitchen
The kitchen is arguably where odour control matters most. Cooking smells — particularly from frying, grilling, fish, and strong spices — can permeate an entire home within minutes. An air purifier for kitchen smells with a robust activated carbon filter placed near the cooking area can significantly reduce lingering food odours.
Look for a unit with a high CADR (Clean Air Delivery Rate) for a kitchen, as it needs to process air quickly during and after cooking sessions.
Living Room and Pet Areas
Pet owners in Canada and London know the struggle well. Pet odours settle into upholstery, carpets, and curtains — and can be remarkably persistent. Placing an air purifier for smells near your pet’s favourite spots helps continuously filter pet dander and odour molecules before they have a chance to settle.
Bedroom
A fresh-smelling bedroom is essential for quality sleep. Whether the issue is musty air, pet smells, or general staleness, an air purifier running on a low, quiet setting through the night can make a noticeable difference in how your bedroom smells and feels.
Basement and Utility Rooms
Basements are notorious for damp, musty odours — especially in older Canadian homes and London properties where moisture can seep through walls and foundations. An air purifier with both HEPA and activated carbon filtration tackles both the mould spores causing the smell and the odour molecules themselves.
Bathroom
Compact air purifiers work well in bathrooms, where moisture-related mould and general odours can linger. Look for a smaller unit with both filtration types for effective, continuous odour control.
What Smells Can an Air Purifier Remove?
To answer the question, will an air purifier get rid of smells definitively, here’s a breakdown of common household odours and how effectively air purifiers tackle each one:
| Smell Type | HEPA Filter | Activated Carbon | Effectiveness |
|---|---|---|---|
| Cooking odours | Limited | ✓ | High |
| Pet odours | Partial | ✓ | High |
| Tobacco smoke | Partial | ✓ | High |
| Mould & mildew | ✓ | ✓ | Very High |
| Chemical VOCs | ✗ | ✓ | High |
| Garbage smells | ✗ | ✓ | Medium |
| Body odour | ✗ | ✓ | Medium |
| Musty/damp air | ✓ | ✓ | Very High |
What Smells Can an Air Purifier NOT Fully Remove?
In the interest of full transparency, there are some smell situations where an air purifier alone has limitations:
- Deeply embedded odours — smells that have soaked into walls, carpets, or upholstery over years require professional cleaning in addition to air purification
- Continuous odour sources — if the source of the smell isn’t addressed (a leaking pipe, a mouldy wall cavity, or an unwashed pet), the air purifier will be fighting a constant battle
- Very large spaces — a single air purifier won’t effectively cover an entire open-plan home; multiple units or a whole-home system may be needed
- Extremely heavy smoke — while activated carbon helps with tobacco smoke, heavy smoke saturation may require industrial-grade filtration
The key takeaway: an air purifier is most effective when used alongside good cleaning habits and odour source management — not instead of them.
How to Choose the Right Air Purifier to Get Rid of Smells
When selecting an air purifier to get rid of smells in your home, here’s what to look for:
1. True HEPA + Activated Carbon Combination
This is non-negotiable for effective odour control. The HEPA filter captures particles and allergens, while the activated carbon layer removes gaseous odour molecules. Together, they address the full spectrum of indoor smell problems.
2. Carbon Filter Thickness
Not all activated carbon filters are equal. Thin carbon pre-filters offer minimal odour control — look for units with a substantial, dense layer of activated carbon for meaningful odour elimination.
3. CADR Rating for Your Room Size
Match the air purifier’s CADR rating to your room size. A unit that’s too small for the space won’t cycle air frequently enough to keep odours under control.
4. Continuous Operation Capability
For ongoing odour control, choose an air purifier that can run continuously on a low, quiet setting — especially in high-odour areas like kitchens and pet areas.
5. Filter Replacement Schedule
Activated carbon filters become saturated over time and lose their effectiveness. Choose a unit with easily replaceable filters and follow the manufacturer’s recommended replacement schedule.
Air Purifier Placement Tips for Maximum Odour Control
Getting the right air purifier is only half the battle — placement matters enormously:
- Place the unit near the odour source where possible — beside the litter box, near the kitchen, or in the basement
- Ensure the air purifier has adequate clearance on all sides for proper airflow
- In open-plan spaces, position the unit centrally to maximise air circulation coverage
- For kitchen smells specifically, run the air purifier during and after cooking for best results
- Keep doors and windows closed while the purifier is running to prevent new odour molecules from entering
How Long Does It Take an Air Purifier to Get Rid of Smells?
One of the most common questions from new air purifier owners is how quickly they’ll notice a difference. The timeline varies based on the severity of the smell and the unit’s CADR rating, but generally:
- Mild cooking odours — 30 to 60 minutes
- Pet odours — noticeable improvement within 24 to 48 hours of continuous operation
- Musty/mouldy smells — significant improvement within 2 to 5 days
- Tobacco smoke — several days of continuous operation for meaningful reduction
- General stale air — most users notice fresher air within the first few hours
The Indoor Hygenics Difference
At Indoor Hygenics, we understand that every home has unique odour challenges — whether you’re dealing with the damp, persistent mustiness common in London properties or the cooking and pet smells that build up in tightly sealed Canadian homes through long winters.
That’s why we offer carefully selected air purification solutions that combine True HEPA and activated carbon filtration to tackle the full range of household odours — not just mask them.
Our team is ready to help you find the perfect air purifier for smells in your specific home, room size, and odour situation.
Breathe Fresher Air Starting Today
So, will an air purifier get rid of smells in your home? Absolutely — provided you choose the right unit with activated carbon filtration, place it strategically, and use it consistently. From stubborn kitchen smells to pet odours, tobacco smoke, and musty basement air, the right air purifier is one of the most effective tools available for genuinely fresher indoor air.
Stop masking smells and start eliminating them for good.
👉 Visit Indoor Hygenics at indoorhygenics.com to explore our range of air purifiers designed to tackle every household odour — and breathe the difference from day one.