Pollen: Pollen a fine, powdery substance released by plants and trees; an allergen.
Effective Asthma Management: Tips for a Healthier Home and LifestyleNatural Asthma Remedies - Easy Tips on Asthma - naturalasthmaremediesEffective Asthma Management: Tips for a Healthier Home and LifestyleNatural Asthma Remedies - Easy Tips on Asthma - naturalasthmaremediesPollen: Pollen a fine, powdery substance released by plants and trees; an allergen.