Which item is commonly used to mask the smell of cannabis?

Incense is commonly used to mask the smell of cannabis due to its strong and pleasant fragrances. When cannabis is inhaled or burned, it releases a distinct and often pungent odor. Burning incense can create a more favorable aromatic environment that can help to cover or reduce the detection of that cannabis odor. It is a common method among individuals trying to conceal the scent, especially in indoor settings.

While stash cans are designed to discreetly store cannabis and other items, they do not actively mask odors. Bongs and pipes are tools used for consuming cannabis and do not serve a purpose in odor masking. Thus, incense stands out as a solution specifically aimed at altering the air quality in a way that diminishes the cannabis smell.