I did this for a long time and still do in a pinch - however, would recommend just buying a pack of filters. Raw makes cotton filters for super cheap, and you can find them on (Amazon)[https://www.amazon.com/dp/B00AHHDF80/ref=cm_sw_r_cp_apa_i_2658Cb1BNYMHA]
If you want to refill more than once you need to swap the cottonpieces in the moth piece once they get soeaked. Just cut a cigarette filter to size and swap them out. You also absolutely have to press hard on the sides of the pod when closing the rubber seal again to pressurize the pod.
That’s just what people who haven’t tried it say, maybe if you’re using cotton filters straight from the cigarette. I’d recommend trying out Raw’s cotton filters as they are way more meant to be smoked with hash/thc/weed than cigarette ones. I also recommend the zen tips cotton filters (will post links down below)
Raw: https://www.amazon.com/Threads-Regular-Natural-Unrefined-Cotton/dp/B00AHHDF80
Got em from a local head shop something similar to these
You can just use the cotton filters. I like them a lot.