Old RO/DI

[outtafocus]

My RO/DI system has been sitting idle for well over a year.

I know I will need to replace all filters and DI resin, but is there anything else I should do with it?

When I stopped using it, I just turned off the inlet valve, I have an inline storage tank which is still full. I have a feeling this water will smell horrible, but will it have contaminated the whole system?