@dona46. Yikes! I meant to reply to @piki who is cutting the filter and has a colostomy (I think)!

Have you heard of or tried tried Osto-EZ-Vent? It attaches to the bag and then you have a flip cap to easily "burp" your bag. It came out long before the appliance companies stated having filters. It's available at supply companies and Amazon as well.

They have vpicture tutorials on attaching the vent on their website, and a video on how to attach to a Sensura Mio pouch.
https://www.kemonline.com/content/home/