After wildfires blazed through California's northern and central regions, parts of the state have been blanketed by ash-filled air and smoke. That's putting the nation's farmworkers, who are already battling triple-digit temperatures and the coronavirus, at risk, multiple farmworkers told CBS News.  "Working in those conditions is very difficult because your eyes burn and [when] you breathe, your throat hurts," she said, adding that the smoke "was very strong, it was practically cloudy to the ground and everywhere it just smelled like smoke."