The only person I know of who uses pods is
@United States
That said, some flavors just permeate everything. You can put a tobacco flavor in a tank and even washing the tank multiple times everything tastes like tobacco for months..
(I no longer let my husband use my RTA's because of it)
What has likely happened is the the flavor got into something, but with the way the pods are they don't share a mouth piece, only the base battery in my understanding, so you shouldn't have any difficulty with a residual flavor lingering but maybe someone else who uses pods can shed some light on the issue.