I am not a fan of having flammable liquid spraying under my hood where it may hit metal that is hot enough to sear a steak. It may smoke now, but there is a definite non-zero chance of it eventually catching. If it were leaking somewhere where it did not produce smoke, I would say that it’s fine, but it isn’t so I won’t; either fix it, or just toss a match under the hood right now and end the suspense. Hoses are a cheap fix anyways, probably cheaper than stop-leak.