Galveston Last week, the World Health Organization stated small particles in the air could transmit the coronavirus. Scott Weaver, MD, with UTMB, said how long and how potent these invisible airborne particles are is now better understood. How to protect yourselfThis is significant because knowing how dangerous airborne particles are tells them the importance of everyone wearing masks. So, if theres a place with stagnant air space, people close together especially, distance still matters. Do not turn off air conditionersIf someone in your household has the virus, you do not want to turn off the air conditioning.