The mattress has become an allergen

This mainly refers to dust mites. Dust mites can only be observed under a microscope, and they mainly feed on human shed skin, so they reproduce faster on beds. Dust mites are important allergens that trigger allergic diseases such as asthma, allergic rhinitis, and eczema. According to WebMD, the largest healthcare service website in the United States, approximately 20 million Americans are allergic to dust mites. Regular cleaning of bed sheets and pillowcases with hot water can remove dust mites. Purchase a mattress protective cover, preferably with a mattress labeled "Prevent Allergy" on it. Additionally, a vacuum cleaner can be used to clean the mattress.