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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Choose Your Path

Find the information that's right for you

People with MCS & Families

Learn how to live and manage day-to-day challenges

Healthcare Providers

Clinical guidance, tools, and education

Professionals & Employers

Workplace resources and accommodations

Researchers

Studies, data, and collaboration opportunities

Partners & Funders

Programs, impact, and ways to support

Quebecers living with MCS

CCHS 2020

Canadians diagnosed with MCS

CCHS 2020

Not working due to MCS

vs. 24% general population

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

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

🏆

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.

The air around youis not neutral.