Random hose behind motor on driver side?

[Jrod6471]

I have a 2016 mazda cx5 grand touring sport fwd and i cant seem to figure out what this hose is for. Does any one know?

 

[cz5gt]

its breather hose

 

[Jrod6471]

its breather hose

Thanks

 

[Jmaz]

Transmission breather hose I do believe.