[N2Advnture]

Keys to prevent residual odor:

1.) Exhaust the smoke

2.) Keep the materials in the room to nonporous ones (leather, wood, tile, etc...)

3.) When you're not in the room smoking, use an Ozonator

For fabrics, I have found that "Pure Ayre" odor eliminator works better than ANYTHING on the market.

I hope this helps

~Mark