well if you can't tell whether it's making any difference then chances are it isnt? I don't know haha. I have tried that before for concerts and stuff but usually I find it's easier to just roll a J or something.

And I have heard that the filter only stops tar and stuff not THC, but ive also heard the opposite, so who knows. Just keep doing what you're doing and at least you can laugh at campus cops and stuff when you walk by them with your 'cigarette'