Smells of things that don't smell (much)

What is the smell of:

• the moon
  
• sadness
  
• a child's joy in watching a soap bubble
  
• grief
  
• cowardice
  
• snow
  
• velcro
  
• a nasty letter
  
• silver
  
• mystery
  
• sand
  
• a sidewalk in summer
  
• the middle of the earth
  
• purple
  
• a contented dog napping
  
• a cloudless spring sky
  
• gold
  
• a dollar bill

Once you've finished, circle the three you like the best and use as a writing prompt.

This is one of a year's worth of writing prompts written by C.M. Mayo and archived at DAILY 5 MINUTE WRITING EXERCISE.