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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 something up
to cause a bad or strong odor in a place or on something. Your cooking sure smelled this place up! The spoiled meat really smelled up the house!
Also, stink up. Cause a bad odor, as in These onions smell up the whole house, or Your old sneakers are stinking up the closet; throw them out. [Mid-1900s]
To cause something to have a strong foul odor: The pungent soup I cooked smelled up the kitchen for days. You should wash the T-shirt, since you were the one who wore it to the gym and smelled it up.
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.”