👉 Fleas are tiny insects that feed on blood and can cause respiratory distress in humans. They are often found in damp, moist environments such as kitchens, bathrooms, and under furniture. Fleas can be transmitted to people through pets or by direct contact with someone who is infested with fleas. Treatment for fleas typically involves using a flea treatment product to kill the fleas and then applying an insecticide spray to the affected areas of clothing and furniture.