They throw two "weapons" - glass bottles of buteric acid (from rancid butter), and the other thing they throw is the methyl cellulose, in paper packages wrapped with tape that burst upon hitting the other ship. It is powder that forms a gel when it gets wet, so is very difficult to wash away. So the buteric acid is the "stinky" and the cellulose" is the "slippery" - just a clarification!
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