haha I used to mix catnip with weed in a joint instead of tobacco when I was in boarding school to disguise the smell. And actually, wild lettuce is more effective, even by itself. The bad thing about wild lettuce is that its harsh...a lot of those 'fake weed' companies sell wild lettuce for a shitload of money, when you can get it it for cheaper than cigarettes at..
www.bouncingb.com

They have a lot of nice legal highs there and they're cheap. Cactuses and everything. I ordered ingredients from there and made Ayahuasca...that shit is great but it makes you throw up. It's an incredible trip though, used by tribal medicine men in the rainforest. You can find directions on how to make it on the internet.

Also, about the catnip, you know those non-nicotine ecstacy cigarettes they sell all over? One of the main ingredients in that is catnip for its calming properties.