[header] How to make your bedroom hypoallergenic [title] Purge allergens from your sheets. [step] Your bed is an allergen hotspot. This is because bedding uses material like feathers and because the bed itself is a haven for dust mites, microscopic creatures that feed on dead skin cells and whose feces and dead bodies cause allergic reactions like coughing and a runny nose. 
Be sure to secure your bed from these allergy sources. [substeps] Encase your pillows, bed, and box-springs in allergy-proof plastic or knit covers.