verb (v)

• expose to fresh air(verb.perception)

  Example:
  Aerate your old sneakers.
  

  Synonym:
  air, air out
  

  source: wordnet30
• aerate (sewage) so as to favor the growth of organisms that decompose organic matter(verb.change)

  Synonym:
  activate
  

  source: wordnet30
• impregnate, combine, or supply with oxygen(verb.change)

  Synonym:
  oxygenate, oxygenise, oxygenize
  

  source: wordnet30