It’s Hard To Pinpoint Exactly Where Forest Fire Smoke Coming Into The Tri Cities Area Is Coming From, But Officials Believe Most Of It Is Coming From North Carolina. Doctors Said They Are Receiving More Instances Of Respiratory Problems From Patients. Immunologist And Allergist Dr. Larry Smith Told Newschannel 11 He’s Heard About 25 Percent More Smoke-Related Complaints Recently. According To Dr. Smith, People With No Respiratory Problems – Like Allergies And Asthma – Are More Affected By The Smoke And Fog.