Also, if you think that you are allergic on some food, it doesn't mean that you are, until you do blood analyzes and determine on which food you are allergic. Also, it should to mention that avoiding of the food doesn't mean totally avoidance of the foods. It is recommendation to make food diary for making list of the food on which you are allergic. Filters for Air Filters for air are good for filtering the air of airborne allergens, but still these product will not clear and filter air from dust mites allergens. It is because dust mites need to be vacuumed or cleaned. For freeing of dust mites you will need regular hygiene of your home. Still, with the words of experts, you may trust to HEPA, which is shortcuts of High Efficiency Particulate Air Filter, which gives results of cleaning air from dust mites. As the causes of the allergies are different, there are also and symptoms and signs of allergies are greatly different. There are symptoms which are only mildly inconvenient, such as swelling or itching, but also there are and symptoms which may be very uncomfortable, such as diarrhea, difficult breathing, vomiting or other. There are several symptoms which are related as airborne allergens symptoms: Mites as well as dust Smoke from cigarettes Bacteria Pollen Viruses Gas molecules Mold spores Still, it could not be said that outdoors there are not contaminants which may cause symptoms of the allergies. This includes next: ammonia, acetaldehyde, carpets, paints, formaldehyde, adhesives, etc. These little microorganisms are living in mattresses, bedding, pillows and furniture in your house. Ways for Controlling Allergy Symptoms It is the fact that you can not live in the vacuum, so that's why it is very difficult to avoid allergens that influence on reaction of your body. Still, keeping clean house is the number one if you are allergic on the symptoms from house. If you are ordering the food at some restaurant with the telephone, you need to explain person to who you are ordering why the chef must not put some of ingredients in your meal. Even if you are eating out in restaurant and you are ordering food that is not familiar to you, try always to discuss about ingredients of it.