I keep my caving and climbing stuff in a closet that also houses the old defunct fuel oil stove that used to heat my house. Some residual heating oil in the lines and, I suspect, soaked into the subfloor makes the closet a little bit smelly. I've not noticed any lingering odors on my stuff before, but I got out my dynamic climbing rope for the first time in a long time and went out with my wife for some wimpy rock climbing. Even in the woods hours later I could smell heating oil on the rope, hence my query.
Reading on this forum I have found strong assertions that petroleum products are harmful and other claims that they are not. I tend to believe that nylon ropes are not terribly affected by hydrocarbons, but I am willing to be corrected. What about fumes?