Insect repellent
Insect repellent was a substance applied to skin, clothing, or other surfaces to discourage insects from interacting with it.

In 2373, Neelix told Captain Kathryn Janeway that he grew up near the Rinax marshlands where they had the  summers in the sector and vicious lavaflies that grew to be six centimeters long. As a result, insect repellent was a booming business. ()

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