Studies have shown that wood/tile flooring is better than carpet when it comes to preventing allergies and asthma. Dust happens everywhere, no matter what kind of flooring you have, however when dust and allergens settle in a carpet, they stay there until you vacuum them away. Carpeting can be a reservoir for allergy-causing substances that trigger asthma. Carpeting in the bedroom can be especially problematic because it exposes you to carpet dust throughout the night. Hardwood flooring or tile is highly recommended for any allergy or asthma sufferers as it does not trap or provide an environment for allergens to gather in.