Aeroallergen
An aeroallergen (pronounced aer·o·al·ler·gen) is any airborne substance, such as pollen or spores, which triggers an allergic reaction. == Pollens == == Spores == In fungi, both asexual and sexual spores or sporangiospores of many fungal species are actively dispersed by forcible ejection from their reproductive structures, which travel through the air over long distances.