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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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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!
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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]
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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.”
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.