I don’t know what brand of air fresheners KTVs generally use, because I don’t have any friends who work in KTVs, but I think the air fresheners used in KTVs should be good brands. The air in KTVs is average. They are all relatively bad, so you must use a good air freshener. Here I recommend several brands of air fresheners for you, you can check them out! 1. Jiali Glade (founded in the United States in 1886, one of the world's leading manufacturers of personal care products and insecticide products, Sino-US joint venture, Shanghai SC Johnson Co., Ltd.) 2. Aijia (national protected trademark, Jiangsu famous brand, ten Large air freshener brand, Sino-US joint venture, national high-tech enterprise, Jiangsu Johnson Tongda Co., Ltd.) 3. Amway Lifestyle (in 1959, the largest direct selling company in the United States, one of the largest private companies in the United States, with an outstanding reputation A multinational enterprise, Amway (China) Daily Necessities Co., Ltd.) 4. Aestar (a famous trademark in Guangdong Province, a national key high-tech enterprise, a leading manufacturer in the aerosol industry chain, one of the top ten air freshener brands, Zhongshan Kaizhong Co., Ltd. ) What brand of air freshener is good? 5. Sawaday (R&D, production and sales of pharmaceuticals, medical devices, daily necessities, food, etc., invested by Japan's Kobayashi Pharmaceutical Co., Ltd., Shanghai Kobayashi Daily Chemical Co., Ltd.) Now more and more families use air fresheners Do you know what air freshener is made of? Air fresheners are composed of ethanol, essence, deionized water and other ingredients. They cover up odors by emitting fragrance and reduce people's uncomfortable feeling about odors.