The smoke can worsen the state of unhealthy individuals with chronic obstructive lung diseases, such as asthma. Even so,
livescience.com explains that these findings are based on previous fires which are not as severe as the ones occurring in California today. The Mendocino Fire that took place in 2017 burned for about 6 weeks and burned 460,000 acres. Today's fires are causing bigger air quality shifts and exposing Californians to higher smoke levels. It could be that the health effects are worse, but only time will tell.