And since as a new DUC user the anti-spam filter will make it hard for you to reply for a day or so...
As James says there are multiple Air plugins including Air Distortion included with your Pro Tools studio subscription (or perpetual license support/update plan) these are a part of the Avid Complete Plugin Bundle (
https://cn.avid.com/plugins/avid-complete-plugin-bundle) included with these plans, and are a separate software install or many separate installers.
Look in your Avid.com account under "My Products" and then under the Pro Tools Studio product for these downloads... expand that/scroll well down to see them (I recommend doing all installs manually not relying on Avid Link... stop that running or even better uninstall it).