Historical clue formulations

• Pungent — 2026-04-09
• Stinging, as an odor — 2026-03-03
• Bitter-smelling — 2025-11-17
• Stinging the eyes, say — 2025-10-03
• Harsh on the nose — 2024-11-25
• Like the smell of burned rubber — 2024-01-20
• Like the smell of burnt rubber — 2023-02-05
• Bitter — 2022-09-25
• Like burning plastic — 2022-06-23
• Nose-crinkling — 2021-12-04
• Nostril-burning — 2021-12-01
• Bitter — 2021-04-30
• Like the smell of burning rubber — 2020-11-23
• Biting — 2020-02-18
• Bitter-tasting — 2020-01-20
• Like burning rubber — 2019-11-24
• Bitter — 2019-08-04
• Having a burning smell — 2018-05-21
• Sharp — 2017-11-23
• Like many volcanic fumes — 2017-07-27
• Pungently odorous — 2017-03-02
• Vitriolic — 2016-05-19
• Stinging — 2014-04-17
• Astringent — 2013-10-09
• Unpleasantly pungent — 2013-09-12
• Nose-burning — 2012-12-15
• Bad-smelling — 2012-04-25
• Nose-burning — 2012-04-07
• Nose-burning — 2011-01-23
• Pungent-smelling — 2010-12-07
• Biting — 2009-10-14
• Bitter — 2009-08-12
• Bitterly pungent — 2009-03-02
• Bitter — 2009-02-20
• Bitter — 2009-02-02
• Caustic — 2008-09-28
• Sharp — 2008-01-12
• Pungent — 2007-10-01
• Pungent-smelling — 2007-09-24
• Sharply stinging — 2006-08-28
• Strong and sharp — 2004-09-26
• Pungent — 2003-06-03
• Like dogbane juice — 2003-04-19
• Eye-stinging — 2001-09-24
• Like thick smoke — 2000-12-08
• Sharp-tasting — 1999-11-29
• Deeply irritating — 1999-08-13
• Stinging — 1999-05-13
• Bitter — 1999-04-06
• Pungent — 1999-03-01