Related Clues:

• Learner in step with old student recalled part of experiment
• Control-group handout
• Identify unpleasant smell -- but this won't cure anything
• Identify nasty smell in fake medicine
• Spoof medicine
• Replace bottle containing dummy drug
• Medicine with no therapeutic effect
• Medically ineffectual treatment
• Plant with unpleasant odour produces fake medicine
• Innocuous medication that may make you feel better
• Fake medicine
• Location upset old boy — it's of no medical benefit
• Identify smell as something with no real effect
• Ineffectual treatment of rank bad smell
• Inactive medicine