Air freshener is a bottle of scented spray with a nozzle. When you press down on the nozzle, the spray comes out, and makes a (usually) delightful scent. This is useful for when you make food that smells really bad, the dog had an accident in the kitchen, or even for when you spray a disgusting smelling bug spray. It could have other uses such as getting you somewhat high, but not just by smelling it.
1.Dude! That better have been the dog! Go get some air freshener!
2.I wanna get high so bad right now, but my parents are home. Hmm, maybe I should try using air freshener... I will just fall down and laugh for 10 minutes...