Air dodges are defensive techniques in Super Smash Bros. Clash that were first introduced in Super Smash Bros. Melee. These work like they do in Super Smash Bros. Brawl, being able to be performed several times in the air and can even be used to catch items.
This technique has been changed in two ways. For one, every character has the same frame data for an air dodge: 45 frames total; frames 3-32 invincible, meaning 2 frames of start-up and 13 recovery. This greatly benefits Peach in particular, who had an awful air dodge in Brawl.
The other difference is that, unlike the regular ground dodges, these can be broken out of with some attacks. For example, Ridley's Sonic Roar will still hit air dodging opponents. Also, regular air throws will break air dodges during frames 16-24 of the invincibility. Command throws like Bowser's Flying Slam will break an air dodge at any time during the invincibility frames. There are some exceptions, though: Anti-air throws like Captain Falcon's Falcon Dive have the same rules as regular air throws, and Ganondorf's air Flame Choke is treated as a normal attack against air dodging opponents.