Historical clue formulations

• What some bees collect in special "baskets" on their legs — 2024-12-24
• Source of seasonal sneezes — 2022-08-08
• Stuff that may make you go "Ah-choo!" — 2018-05-07
• What's often blowing in the wind — 2013-06-01
• Sneeze producer — 2011-05-11
• Common allergen — 2005-01-18
• Common allergen — 2004-04-29
• Sneeze producer — 2003-06-27
• Bee's bundle — 2003-02-25
• Sneeze cause — 1996-04-30
• Allergy stimulant — 1996-01-03
• Allergy sufferer's bane — 1994-10-18