Lungs of adults who had grown up with secondhand smoke had more `` holes '' or small air pockets in the lung tissue, which can lead to a condition called bronchiolitis. " Lovasi and her team checked the lung CT scans for large areas where the density was similar to air Even though smoke-exposed lungs functioned fine , there 's concern for future health . About 24 million people in the United States have emphysema , chronic bronchitis .
Lungs of adults who had grown up with secondhand smoke had more `` holes '' or small air pockets in the lung tissue, which can lead to a condition called bronchiolitis. " Even though smoke-exposed lungs functioned fine , there 's concern for future health . About 24 million people in the United States have emphysema , chronic bronchitis .