Smoke vs. Superfog (IMAGE) University of California - Riverside Caption A: Smoke from a fire under usual conditions. B: Smoke combines with cool, humid air to make superfog. Credit UC Riverside Usage Restrictions With credit to UC Riverside License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.