hmm, i feel like when i smoke from a bong it doesnt happen to me nearly as bad because the smoke is purer. I smoked like 6 joints the other night and thats when i really felt it the worst. I usually take medium sized hits so i usually have no problems during the act of smoking. Its after the high, like a 4-5 hours later that i really get the tightness in the chest and the pain in my throat. PEACE