Suphioglu.
1998. This is a review article that
describes the ways in which grass pollen allergens in the respirable
range (<5μm) may occur in the outdoor environment and how those
are related to thunderstorm asthma.
Primarily, rainfall ruptures grass pollen grains, which release allergen
containing starch granules. The author also
indicates the possibility of released starch granules binding to respirable diesel exhaust particles.