Many people living with asthma, Allergic Bronchopulmonary Aspergillosis (ABPA), or bronchiectasis describe strong reactions to everyday smells — perfumes, cleaning products, paints, or air fresheners.
These reactions can cause immediate coughing, wheezing, throat irritation, or chest tightness, and they can last for hours or even days.
To understand this better, we asked members of our patient community:
“Are there any smells that don’t affect you?”
Their replies were detailed, honest, and very relatable.
💬 What patients told us
“I’m OK with most perfumes, but not Estée Lauder. Aftershaves can be troublesome.”
“Unfragranced alcohol hand sanitiser is fine — even though it smells strong.”
“Cooking smells are OK if it’s food I can eat, but not frying.”
“Crowded rooms full of cleaning products or perfume — that’s when I start coughing.”
“I use peppermint essential oil to mask other smells if I get caught off guard.”
“If I avoid mould, dust, aerosols, and detergents, I can generally stay well.”
These voices show that odour sensitivity varies hugely from person to person — and what’s tolerable one day might trigger symptoms another.
🌸 Smells people can usually tolerate
Even among those highly sensitive to scents, a few odours were commonly reported as “safe”:
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Some light or natural perfumes
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Alcohol-based hand sanitisers (if unfragranced)
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Food smells from meals the person can eat
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Saline or hypertonic saline nebulisers
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Outdoors air after rain — described by some as “clear” or “fresh”
Many added that they simply don’t notice safe smells — because their airways stay calm.
🚫 Common odour triggers
| Category | Examples mentioned by patients |
|---|---|
| Fragrances & aerosols | Perfume, hairspray, carpet freshener, pet grooming sprays, room sprays, vapes |
| Household products | Detergents, polish, disinfectants, scented candles, new rugs or furniture “off-gassing”, silicone sealant, fresh paint |
| Environmental triggers | Dust, damp wood, mould, oil fumes, cigarette smoke, some trees or plants |
| Crowded indoor air | Theatres, shops, salons, or restaurants where several products and fragrances combine |
Reactions were often described as immediate:
“Aerosols set me off straight away — I feel it in my chest before I even notice the smell.”
🧩 Why odours trigger symptoms
Odour sensitivity isn’t usually an allergy — it’s caused by airway hyperreactivity.
In these conditions, nerve endings in the bronchial walls become oversensitive.
When exposed to volatile organic compounds (VOCs), aerosols, or fine particles, the airways tighten and release inflammatory mediators — a reaction that’s stronger and longer-lasting in those with existing lung inflammation.
People with ABPA, Severe Asthma with Fungal Sensitisation (SAFS), or Chronic Pulmonary Aspergillosis (CPA) often have inflamed, mucus-filled, or scarred airways, making them far more reactive to irritants.
🧭 Factors that make reactions worse
Patients pointed out that it’s not just what’s in the air, but also:
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Concentration – strong or enclosed fumes trigger faster responses
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Combination – multiple scents together (perfume + cleaner + paint) are far harder to tolerate
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Duration – prolonged exposure leaves lingering symptoms
💡 Tips for managing odour sensitivity
Plan ahead
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Choose quiet times for haircuts, shopping, or social events.
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Check if venues use air fresheners or scented cleaning products.
Control your environment
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Use fragrance-free detergents and cleaning products.
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Ventilate your home after cleaning or decorating.
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Keep dehumidifiers and air purifiers running in damp areas.
Be prepared
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Carry a reliever inhaler or antihistamine if prescribed.
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Consider a FFP2/FFP3 mask in heavily fragranced or dusty places.
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A small bottle of peppermint oil or menthol inhaler may help mask irritant odours temporarily.
Communicate
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Let friends, family, or workplaces know that fragrances affect your breathing.
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If public spaces (like theatres or salons) are overwhelming, it’s okay to step out — health comes first.
🧠 Understanding and empathy
“It’s not about disliking smells — it’s that my lungs treat them as an attack.”
For many, this sensitivity means planning life around exposure — avoiding crowds, timing visits, or even missing social events.
Recognising that these reactions are physiological, not psychological, can help families, friends, and employers offer real support.
❤️ Takeaway message
Odour sensitivity is part of the lived experience of reactive airway disease.
It isn’t always predictable, but understanding your triggers — and which scents are safe — can make everyday life much easier.
As one patient put it:
“If I can avoid mould, dust, aerosols, and detergents, I can generally stay well.”
By sharing these experiences, patients are helping others realise they’re not alone — and helping clinicians understand just how much “harmless” smells can matter.
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