Just looking it up online as I have no personal knowledge here, the Hebrew word for rope, חבל (hevel, pronounced as ḥ or χ) apparently has shared roots with Arabic, Syriac, Akkadian and Ugaritic that all have similar sounding words and the current guess it that there was a proto-semitic word like "ḥabl" and of course none of those sound like camel or gamal, so you can at least strike Hebrew and Arabic from the list of potential sources of origin.
That would be the common word for rope. The claim isn't that it's the ordinary word for rope, but rather a more rare word for rope, maybe for a particular type of rope made of camel hair.
Others here have posted the Aramaic word in question.
