Help me my Eyes are watering

all good points to consider.
i once followed a 40's street rod home at highway speeds... with a large gap between our cars.
.. my eyes stung beyond belief.
you may need to lean your carburetors' cruise circuit or rebuild it and check your engines overall tune if you are excessively rich.
..the problem is worse with an airgap style intake or having the intake heat cross-over blocked.
..just a thought.