|Description||Gives pathogen ability to travel on dust particles. Increase infectivity, especially in arid environments and plane transmission.|
|DNA cost||9, 13 (Shadow Plague)|
|Next transmission||Air 2|
Air 1 is a tier 1 transmission. It increases infectivity, with a bonus in arid environments. It also gives a bonus in plane transmission, making it more likely that a plague will successfully board a plane, thereby infecting countries by that way.
Sometimes, the player will encounter an event where air filters are used on airplanes. This will stop airplanes from being infected until you evolve Air 1, or Air 2 if the event occurs after the evolution of Air 1..
If evolved while the disease is noticed, governments will start to give out face masks, decreasing infection rates by 3%.