Lyric discussion by VanguardV 

Cover art for Platform Fire lyrics by Jack's Mannequin

At a concert, Andrew said the first line of this song was supposed to be "Smokin' California Blue Dream" (a strain of weed), so I'd say this song is at least partially about the influence of drugs. I'm also pretty sure the lyrics are "this haze is only temporary," which has to be a reference to weed. IMO it's about doing concerts and stuff blazed while still feeling the pressure of performing well.