Possible Clues:

• Like decongestant sprays
• Pinched from Decameron as a line
• With a vocal twang
• Like hooter US space administrators lacked at first
• Rocket scientists heading for landing on a central feature
• Alan's trick through the nose
• A kind of twang
• Word preceding "passage" or "spray"
• Nose-y?
• Twangy start to accompaniment disturbing northern girl