The airborne spores of Cladosporium species are significant allergens, and in large amounts they can severely affect people with asthma and other respiratory diseases. Cladosporium species produce no major mycotoxins of concern, but do produce volatile organic compounds (VOCs) associated with odours.
The presence of Cladosporium species, particularly their airborne spores, is a concern for individuals with allergies and respiratory issues due to the potential for allergic reactions. While they don't produce major mycotoxins, they release VOCs that can cause unpleasant odors.