truly a hero for saving everyone from having to own up to their worst comments haha <| sep |> I wish I was able to comment but my bitch assed caretaker has to do it all . Am four limb amputee <| sep |> Habs i swear on me mum , if you don ' t win . <| sep |> Diesel particulates may play a role in this phenomenon . Background Grass pollen allergens are known to be present in the atmosphere in a range of particle sizes from whole pollen grains approx . 20 to 55 im in diameter to smaller size fractions 2 . 5 fine particles , PM 2 . 5 . These latter particles are within the respirable range and include allergencontaining starch granules released from within the grains into the atmosphere when grass pollen ruptures in rainfall and are associated with epidemics of thunderstorm asthma during the grass pollen season . The question arises whether grass pollen allergens can interact with other sources of fine particles , particularly those present during episodes of air pollution . . Conclusion DECP Diesel Exhaust Carbon Particles are in the respirable size range , can bind to the major grass pollen allergen Lol p I under in vitro conditions and represent a possible mechanism by which allergens can become concentrated in polluted air and thus trigger attacks of asthma . Source 2222 . 1997 . tb 00702 . xfull