People who suffer from asthma or allergies should consider these points when buying a vacuum cleaner. Always check the vacuum cleaner filter type, vacuum cleaner bag, and vacuum cleaner usage. A bagged, sealed system is usually the safest way to go. Additionally, make sure it has a HEPA filter. It is the best way to get rid of those allergy-causing mites, bacteria, and viruses. So you can get a vacuum cleaner that has a HEPA filter in it to eliminate the dust.