stinkball

from The Century Dictionary.

• noun A preparation of pitch, resin, niter, gunpowder, colophony, asafetida, and other offensive and suffocating ingredients, placed in earthen jars, formerly used for throwing upon an enemy's decks at close quarters, and still in use among Eastern pirates.

from the GNU version of the Collaborative International Dictionary of English.

• noun A composition of substances which in combustion emit a suffocating odor; -- used formerly in naval warfare.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun military, historical A composition of substances which in combustion emit a suffocating odour, formerly used in naval warfare.