Asthma triggers

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A woman wearing a hijab appears against a black background, with the text 'IS THIS MAKING YOUR ASTHMA WORSE?' prominently displayed in white and blue.

Identify your personal asthma triggers—dust, smoke, pets, pollen, mould, cold air or strong cleaning products—and discover practical, low-effort steps to reduce exposure at home and outdoors. Learn how ventilation, dehumidifiers, anti‑allergy bedding, mindful cleaning and checking air‑quality/pollen forecasts can cut flare‑ups and protect your breathing.

Key Takeaways

  • Identify personal asthma triggers like dust, smoke, and pollen to reduce flare-ups at home and outdoors.
  • Common indoor triggers include mould and strong cleaning products; gentle alternatives can help manage symptoms.
  • Outdoor factors such as air pollution and weather changes can worsen asthma; check forecasts before activities.
  • Practical steps include improving ventilation, removing mould, and using anti-allergy bedding to lower risks.
  • In case of a flare-up, use your reliever inhaler, stay calm, and seek medical help if symptoms persist.

Introduction

In this episode of the HIYOS asthma webinar series, GP Dr. Vin and practice manager Saira (who has lived experience of asthma) discuss common triggers and practical ways to reduce flare‑ups at home and outdoors.

Common indoor triggers

Mould, dust and carpets are frequent culprits — remove mould promptly, reduce carpeted areas where possible and vacuum regularly. Household cleaning products (especially bleach and strong disinfectants) can provoke symptoms; use gentler alternatives or ask someone else to clean.

Pets with fur (cats, dogs, hamsters) may trigger reactions even if you only visit a home with animals. Dust‑mite covers for mattresses and pillows can help.

Outdoor and environmental triggers

Air pollution (NO2, particulate matter, ozone, sulphur dioxide) and high pollen counts can worsen asthma — check local air‑quality and pollen forecasts before planning activities. Cigarette smoke, even residual smell, is a strong trigger. Weather factors — cold air, thunderstorms and rapid changes — can also provoke symptoms for some people.

Less obvious triggers

Respiratory infections, acid reflux, certain foods, strong fragrances and intense emotions (which change breathing patterns) can trigger attacks in susceptible people. Triggers vary widely between individuals, so identifying personal patterns is key.

Practical steps to reduce risk

Identify your triggers and plan to avoid them. Improve ventilation, remove mould, swap high‑pile carpets for hard floors if possible. Also, use anti‑allergy bedding, choose milder cleaning products, and limit exposure to smoke and outdoor pollution.

Check air‑quality and pollen apps and consider who does cleaning when triggers are present.

A close-up of a gloved hand using a scraper on a textured wall during a renovation process. Mould can cause asthma

What to do in a flare‑up

Sit upright, stay calm, use your reliever inhaler as instructed (repeat every 30–60 seconds, up to 10 puffs) and call 999 if there’s no improvement. Discuss trigger management and an asthma action plan with your GP.

If you’re concerned about any of the points mentioned, please reach out to your GP.

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