I put quickroof self-stick 2 layers on the roof, gosh, 4 years ago? It sits in the sunshine daily, all day long, and hasn't even thought about coming off yet--and no it doesn't stink. Yes I'm VERY (VERY!!) sensitive to smells too including asphault, smoke, etc and I have never smelled anything that people said it would do. Under it is some pipe wrap, just one layer. Noise? What noise? It rains (hard, 3+ inches per hours) here pretty often, small hail, etc and it doesn't really make any noise. I hear it bouncing off the windshield, deck lid, hood, hear the exhaust noise and road noise but don't hear much from the roof. 93 coupe no sunroof if it makes any difference.
It doesn't make any difference as far as heat goes; I think most of that is because of the non-tinted windows and lack of clearcoat (clear has almost all peeled off)-and it's dark blue. Gets bad hot inside the car, I've seen 174 degrees at one point but the thermometer was sitting in the direct sunlight, so the reading was probably 10 degrees or so on the high side.