Scentless flask

An Scentless flask is a potion flask originally containing six doses of Scentless potion. It is created by using scentless potion on a potion flask. Each dose allows every trap a player sets to be rendered as if it had been smoked with a torch.

The flask is made by blowing robust glass, requiring 89 Crafting and giving 100 experience. Red sandstone can be mined at Oo'glog and smelted using the Robust glass machine also located at Oo'glog.

To decant the potion into the flask, one must have at least 6 doses of scentless potion in their inventory, as well as one or more potion flasks. Using the flask on the potion will open a menu to decant them. The optimal inventory setup for decanting potions is 17 4-dose potions and 11 flasks.

Once the potion has been partially drunk, no more doses can be added to it. After all six doses have been consumed, the flask will shatter and disappear.

Trivia

 * Unlike most filled potion flasks, these items were named "X potion flask" rather than "X flask", such as in the case of Attack flask. This was later fixed in an unknown update.