Multiple Chemical Sensitivity (MCS) is a chronic health condition and a recognized disability nationally and internationally. It is triggered by exposure to volatile organic compounds (VOCs) and other chemicals found in fragrances and other conventional products, including personal care products, cleaning and laundry products, , air fresheners, ), and chemicals emitted from building materials and furnishings.
Due to sensitization from exposures, MCS can affect multiple body systems and make it difficult to access spaces essential for everyday living, such as workplaces, healthcare settings, schools, and public places.
For people living with Multiple Chemical Sensitivity (MCS), exposure to triggering substances reliably results in reactions. While the specific triggers may differ, continued exposure can increase sensitization and broaden the range of substances that cause harm.
● Coughing / wheezing
● Shortness of breath (asthma-like symptoms)
● Chest symptoms
● Sinus pain / sinus infections
● Sore throat
● Swollen glands
● Flu-like symptoms
● Coughing / wheezing
● Shortness of breath (asthma-like symptoms)
● Chest symptoms
● Sinus pain / sinus infections
● Sore throat
● Swollen glands
● Flu-like symptoms
● Coughing / wheezing
● Shortness of breath (asthma-like symptoms)
● Chest symptoms
● Sinus pain / sinus infections
● Sore throat
● Swollen glands
● Flu-like symptoms
● Coughing / wheezing
● Shortness of breath (asthma-like symptoms)
● Chest symptoms
● Sinus pain / sinus infections
● Sore throat
● Swollen glands
● Flu-like symptoms
Multiple Chemical Sensitivity (MCS) creates significant barriers to accessing everyday environments. Chemical exposures in offices, schools, healthcare settings, and public spaces routinely limit participation when accommodations are not in place. In the absence of accessible environments, exclusion can be severe.
MCS also has a measurable impact on employment. In Canada, more than 41% of people living with MCS are not working, compared to approximately 26% of the general population. Similar patterns are observed in Québec
Ability to enter workplaces, maintain employmentb, or participate in meetings
Finding or maintaining a healthy, lowest volatile organic compound (VOC) emissions, least toxic, and fragrance-free living environment
Difficulty accessing clinics, appointments, and hospital settings
Barriers in school environments, events, and community spaces
Misunderstanding and stigma that can lead to social isolation
increased costs associated with creating safer environments and managing daily needs
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