Tips to Maximize Concealment
Seems no other brand bothers to mention the "other smoke". But it should be no secret, there are two sources to contend with. The exhaled portion obviously, and the "side-stream" smoke. Make sure that you adequately address both when full concealment is critical.
Now we've obviously got the exhaled portion dialed, but as for the rest, I'm going to hook you up here too. So first things first. If you cannot extinguish it after a hit, don't even consider it. Avoid anything that continuously burns, obviously (no J's). With that said, I believe the best option for maximizing concealment is vaporization. But not everyone has that luxury. So moving on to making more common methods work.
So whether it's a bong or a one-hitter, make sure that you always clear the chamber. This ensures that no remnant smoke wafts back out. Secondly, always make sure to cover the end (or the bowl) using a thumb, lighter, or bowl snuffer. Just make sure to starve the ember.
Now other than that, I would just say crack a window. But to recap, avoid joints, clear chambers, and snuff out cherries. Make sure to use a reputable sploof (Smoke Eraser or Smoke Buddy) that guarantees a sufficient level of activated carbon, and I think you'll be good to go.
