Its the combustion thats the problem, so this idea that because cannabis is natural burning and inhaling it is fine is just wrong. While many longitudinal studies on the health impact of inhaling marijuana are still under way, there are plenty of toxins and tar in cannabis smoke that can hurt the lungs, said Carol Boyd, founding director of the Center for the Study of Drugs, Alcohol, Smoking and Health at the University of Michigan in Ann Arbor
However, even if a filter reduces certain chemicals, that does not automatically mean it reduces the long-term health risks of smoking
It's also incredibly sustainable
Stick Length
The gear in Aliens doesnt work very well
Assess the sealing mechanism (e.g., silicone O-rings, latch type, screw-top) for effectiveness