Exposure to wildfire smoke can have serious health effects, particularly for individuals with pre-existing respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD). It can also cause eye irritation, headaches, and other symptoms.
In recent years, there have been several high-profile instances of wildfire smoke affecting air quality in Canadian cities. For example, in 2018, smoke from wildfires in British Columbia and Alberta caused air quality advisories to be issued in several cities, including Vancouver and Calgary.

To address this issue, the Canadian government has implemented a number of measures to monitor and mitigate the effects of wildfire smoke. This includes investing in air quality monitoring equipment, providing public health advisories and information, and working with provincial and territorial governments to coordinate response efforts.
Individuals can also take steps to protect themselves from the effects of wildfire smoke, such as staying indoors as much as possible, using air purifiers or filters, and avoiding strenuous outdoor activities during periods of high smoke concentration. Overall, while wildfire smoke remains a significant issue in Canada, there are steps that can be taken to mitigate its effects and protect public health.