Alter Aeon Online Help

Keywords are:  'thief skill gasbombs bombs'

Skill: gasbomb                  Lvl 36 Thie  (28%)
                                (helpful)   Requires: frostworks
                                Group: Thief tinkering
                                Profession

This skill allows thieves to build grenades that disperse poisons or other
liquids.  Gasbombs are one of the more effective ways to poison large,
aggressive creatures that are too dangerous to confront in other ways.

See also 'help build grenades' for more information.