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smell of = have a particular smell
examples:
- His breath smelled of cigarettes.
- His breath smelled of beer.
- You smell of perfume. Are you going out?
- You haven’t been drinking? The whole room smells of alcohol!
- I have just had a bath and the bathroom smells of this wonderful soap I used.
- The soup smelled deliciously of herbs.
ward off = keep something unpleasant away
examples:
- Our dogs ward off unwanted visitors.
- I can’t ward off mosquitoes in the summer. They are all over me.
- He started hitting her and she put her hands up to ward off the blows.
- He takes pills to ward off depression.
- I can’t ward off this bad feeling.
- The last time you fell off your bike you hurt your head. Wear a helmet this time to ward off danger.