Does anyone know how often one should replace a pod w a vape like this? The liquid has turned a darker color is that normal? Just curious. : r Vaping How to Refill a JUUL Pod Vape Shack Switch Replacement Pod by dotmod Juul allegedly shipped 1 million contaminated vaping products Vox JUUL Resources Learn About The JUUL E Cigarettes And JUULpods JUUL FDA Bans Juul From Selling E Cigarettes in U.S. WSJ