The main Rajamandala-Cipeundey route goes to Cirata Reservoir. It is better to go from the north (cirata) because it will pass through the Sarimukti landfill which smells amazing. At least it's passed downhill.
If you come from the Cipatat/Rajamandala direction, you really have a test of VO2Max. Just imagine going up but smelling garbage. Tortured badly. But for those who want to torture themselves or test their sense of smell, you can try it. Bonus tip, don't gasp for air. Later can be entered flies.
Also be careful with puddles of garbage on the road. That smell can linger for days.