Odd Sounds: Scraping or fluttering noises coming from the chimney may show an animal nesting inside, that is a common cause of blockages and should be removed skillfully. Source removing refers to the entire process of truly getting rid of the dust, Filth, pollen, together with other make a difference https://www.google.com/maps/d/edit?mid=1cflLlXS9CdqA8WpBKv_oLoqlXORPcL4&usp=sharing