take the filter out of a cig and light it and see what happens it will shock you if you take the filter out and use a business card as a filter[like for a blunt/paper plane] and put it in you will see how much smoother it is and how does smoke come out of the filter if its closed its all chemicals take the filters out and put ur own in also it will not turn yellow like the filters they put in will try it what you got to loose?