Possible Clues:

• Do up what belongs to us through the nose
• One senses them being so backward, gloomy inside
• The setter, dropping out from playing 'Dormouse', gets bouquets
• Smells good, our scent bottle
• Smells nothing serious and leaves without permission
• Gloomy surrounded by very big smells
• They might hum, unsmiling, in Old Style setting
• Do come back with yours, and mine smells!
• Oral sense of smells
• By the sound of it, knows how to do up your one and mine