Fire season in California unfortunately hits at peak harvesting time in the wine country. The workers will harvest all day in the heat, all while breathing in the soot from the fires that burn nearby. Inhaling all of these particles can pose a threat to the workers. Health has now become a major concern for farm workers in Sonoma County, California.
https://www.news-medical.net/news/20191029/Farmworkers-face-daunting-health-risks-in-Californias-wildfires.aspx