In Beauceville Qubec the municipality recommends turning off ventilation systems to prevent potentially toxic fumes from entering their homes.
Then there is LaFarge in Brookfield Nova Scotia. Lafarge plans to burn about 20 tonnes of tires a day — as much as 5,200 tonnes a year. It’s perfectly fine to have these fumes enter your home…. See this slide show…
https://www.slideshare.net/LydiaSorflaten/citizens-against-burning-of-tires-presentation