Yeah I've had that problem before and I realized it was caused from when i would hit it I would fill it with smoke, exhale, and then clear it which let the smoke set a moment and got really nasty.

Simple solution for me was to not wait between clearing it, since I cant take huge hits I had to burn the bowl less so I didnt kill myself trying to clear it.
BongLoser Reviewed by BongLoser on . Getting Really Harsh Bong Hits I recently aquired a graffix bong, glass on glass, thats a little over 2 feet tall. Recently though, i've been having some trouble with hits that have been destroying mine, and my friends lungs, sending us into a coughing frenzy for about 5 minutes. Sometimes the smoke seems to stay down the bottom of the bong, and thats when it usually starts to taste like complete ass. The smoke will occasionally turn a nasty yellow color as well. I don't know if its the quality of the weed, if the Rating: 5