To systematically investigate indoor pollen levels and pollen components, one can draw upon the wealth of experience in the field of pollen monitoring in outdoor air. When focusing on indoor air, the following issues need to be systematically addressed:
- Simultaneous continuous monitoring of pollen concentrations in outdoor and indoor areas of relevant buildings in order to systematically determine the background pollen concentration in model rooms while taking into account building-specific and condition-specific parameters. Relatively small, continuously operational, and fully automated pollen-counting systems (once their development is complete), for example, would be suitable for this measurement task. The deployment of individual pollen collectors and the use of symptom-focused questionnaires or symptom apps are also considered to be promising methods.
- Conducting systematic studies to differentiate between pollen count and indoor pollen allergen levels, e.g., by investigating indoor PM10 for pollen allergen content.
The systematic investigation of these issues can answer questions on the health-related significance of allergenic pollen indoors as well as on specific measures for the reduction of indoor pollen counts.
The aim of this communication is to find co-operation partners with an interest in this topic and to develop a joint research proposal.
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Considering the size of pollens, infiltration is a questionable pathway. Windows are the common way of natural ventilation practices, so sensitive people should be careful in this practice during pollination seasons. the most critical issue is the availability of any flowering houseplant having the potential to cause airborne allergens with their pollen production. So, if the plants and allergic people share the same indoor space, my answer would be yes.
The allergenic content of the atmosphere can change based on distinguished climate, geography and vegetation. There should be more experimental studies motivated related with pollen and subpollen particles in urban ecosystem. I have found the following paper which has an extensive study on pollen allergy based on European context:
DOI: 10.1111/j.1398-9995.2007.01393.x
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