Ключевые слова: black color, burning, circle, closeup, dark, dengue fever fever, extreme closeup, fumes, healthcare and medicine, hong kong, horizontal, household equipment, illness, incense, incense coils, insect, insect repellant, lifestyles, mosquito coil, nature, pest control equipment, photography, protection, scented, shadow, shape, smoke physical structure, social issues, spiral, swirl, textured, textured effect, unpleasant smell, urgency,