smell it up
To fill something or some place with a foul odor. A noun or pronoun can be used between "smell" and "up." Tom, your tuna sandwich is smelling up the office! Please go eat it somewhere else! Please don't smell the house up with your smoking—if you have to do it, go outside.
smell it upand smell the stuff
tv. to sniff or snort powdered drugs, usually cocaine. (Drugs.) One of those guys shoots it; the other smells it up. The addict put the powder in a narrow row in order to “smell the stuff.”