It allows more smoke to buildup and be inhaled at once. Numerous things are happening when utilizing a bong, or smaller bubbler, while consuming cannabis.
Burning cannabis produces a smoke stream that contains all the things you want, such as THC, CBD, other phytocannabinoids and terpenes, and a lot of the things you don’t, such as hot smoke, polycyclic aromatic hydrocarbons (PAHs), hundreds of carcinogenic compounds generally referred to as tar, and fine particulate matter, like ash. Along with cooling, each inhalation, the water (or other liquid) inside the bong filters out the ash that would otherwise end up in your mouth, such as when smoking a joint or pipe. There’s also a certain amount of tar that is filtered out of each hit as well, which is why bong water eventually turns a sickly brown after numerous uses.
The main draw for many to using bongs and bubblers is their ability to cool and filter the smoke through water, offering a smoother draw even with larger hits. Bongs tend to maintain the aromas and tastes of the strain as well, and the lower amounts of tar and ash you’re inhaling in general, the better.
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