The air around you
is not neutral.

For over 1.13 million Canadians diagnosed with Multiple Chemical Sensitivity, commonly encountered environments can be harmful.

We all have a role in creating spaces that are healthy, not just for today but for future generations..

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Find the information that's right for you

People with MCS & Families
Learn how to live and manage day-to-day challenges
Family
Healthcare Providers
Clinical guidance, tools, and education
Healthcare
Professionals & Employers
Workplace resources and accommodations
Professionals
Researchers
Studies, data, and collaboration opportunities
Research
Partners & Funders
Programs, impact, and ways to support
Partners
0
Quebecers living with MCS
CCHS 2020
0
Canadians diagnosed with MCS
CCHS 2020
0
Not working due to MCS
vs. 24% general population
0
More likely to report poor health
CCHS 2015–2016
🌿 Understanding MCS

When everyday environments become barriers

Multiple Chemical Sensitivity (MCS) is a chronic health condition and recognized disability triggered by exposure to VOCs and chemicals in fragrances, cleaning products, and building materials. Even low-level exposures can provoke reactions across multiple body systems.
🌸 Fragrances & perfumes
🧹 Cleaning products
🌬️ Air fresheners
🏗️ Building materials
🧴 Personal care products
💊 Medications & additives
Learn About MCS →
Body systems commonly affected:
🧠 Neurological
Migraines, brain fog, dizziness, memory challenges, insomnia
🫁 Respiratory & Immune
Coughing, shortness of breath, sinus pain, flu-like symptoms
❤️ Cardiovascular
Palpitations, irregular heartbeat, blood pressure changes
🌿 Gastrointestinal
Nausea, bloating, abdominal pain, reflux
🦴 Musculoskeletal
Joint and muscle pain, weakness, twitching
✨ Skin
Flushing, hives, eczema, itching
ASEQ – EHAQ

"Everyone deserves
the right to breathe."

Our Mission

Advancing environmental health for all Canadians

ASEQ-EHAQ is a Canadian charitable non-profit dedicated to advocacy, education, research, and support for people living with Multiple Chemical Sensitivity.
We work alongside people with MCS, healthcare providers, researchers, employers, and policy makers to remove barriers, advance recognition, and create safer environments for all.
🏠 ECOASIS Housing🔬 Research⚖️ Advocacy🎓 Education🌍 Resilience 2026
About ASEQ-EHAQ →
🏆

AMA Policy Recognition

The American Medical Association adopted policy H-135.902 in June 2025, recognizing MCS as a condition that can substantially limit major life activities.

🌐

UN CRPD Recognition

The UN Committee on the Rights of Persons with Disabilities explicitly referenced MCS in its Concluding Observations to Canada, affirming rights to equal access and accommodation.

📰 Latest Updates

News & Resources

Conference
Resilience 2026 — International MCS Conference
A two-day virtual international conference in partnership with Women's College Hospital, bringing together researchers, clinicians, and people with lived experience.
2026Learn more →
🔬 Research
New IJERPH Publication: Robins, Molot & Peris 2026
Peer-reviewed research advancing understanding of MCS mechanisms and prevalence, published in the International Journal of Environmental Research and Public Health.
2026Read study →
📋 Policy
AMA Adopts MCS Policy — H-135.902
The American Medical Association adopted policy H-135.902 in June 2025, formally recognizing fragrance sensitivity and MCS as conditions that can substantially limit major life activities.
June 2025Read more →

Join the movement for cleaner air.

Support ASEQ-EHAQ in advocating for safer environments, better access to care, and the full recognition of Multiple Chemical Sensitivity across Canada.

Get Involved
Contact ASEQ-EHAQ