What is the public's opinion on this scenario. I use an activated carbon filter (like a McFinn's for example) on all my glass, everytime. Pretty much every guest that comes over prefers NOT to have it on and ends up taking it off. Here's my question/opinion. Isn't it good manners or respectful for them to reattach the carbon filter before handing the bong back to me, especially if we're sharing bowls?!? I hate it, because I won't notice until it's time to clear it and my lungs are hit with a much harsher smoke than they're used to. What sayeth the brethren?